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1874169214009 = 292472072
BaseRepresentation
bin11011010001011101001…
…100001011010000111001
320122011120002000121202221
4123101131030023100321
5221201244304322014
63552551554324041
7252255442320421
oct33213514132071
96564502017687
101874169214009
11662915730974
12263287589621
1310796c3798a1
14669d2dc5481
1533b411b6b24
hex1b45d30b439

1874169214009 has 9 divisors (see below), whose sum is σ = 1941065357647. Its totient is φ = 1809504357304.

The previous prime is 1874169214007. The next prime is 1874169214081. The reversal of 1874169214009 is 9004129614781.

The square root of 1874169214009 is 1369003.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 982768874409 + 891400339600 = 991347^2 + 944140^2 .

It is not a de Polignac number, because 1874169214009 - 21 = 1874169214007 is a prime.

It is a super-2 number, since 2×18741692140092 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1874169214007) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39677484 + ... + 39724690.

Almost surely, 21874169214009 is an apocalyptic number.

1874169214009 is the 1369003-rd square number.

1874169214009 is the 684502-nd centered octagonal number.

It is an amenable number.

1874169214009 is a deficient number, since it is larger than the sum of its proper divisors (66896143638).

1874169214009 is an frugal number, since it uses more digits than its factorization.

1874169214009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94472 (or 47236 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 1874169214009 in words is "one trillion, eight hundred seventy-four billion, one hundred sixty-nine million, two hundred fourteen thousand, nine".

Divisors: 1 29 841 47207 1369003 39701087 2228500849 64626524621 1874169214009