Search a number
-
+
2166250019 = 16754123977
BaseRepresentation
bin1000000100011110…
…0101101000100011
312120222011220101012
42001013211220203
513414030000034
6554542131135
7104452551503
oct20107455043
95528156335
102166250019
11a1187877a
12505580aab
13286a4585b
141679b3a03
15ca2a1cce
hex811e5a23

2166250019 has 8 divisors (see below), whose sum is σ = 2183340768. Its totient is φ = 2149208640.

The previous prime is 2166249979. The next prime is 2166250043. The reversal of 2166250019 is 9100526612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166250019 - 216 = 2166184483 is a prime.

It is a super-2 number, since 2×21662500192 = 9385278289635000722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166259019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78359 + ... + 102335.

It is an arithmetic number, because the mean of its divisors is an integer number (272917596).

Almost surely, 22166250019 is an apocalyptic number.

2166250019 is a deficient number, since it is larger than the sum of its proper divisors (17090749).

2166250019 is a wasteful number, since it uses less digits than its factorization.

2166250019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24685.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 2166250019 is about 46542.9910835133. The cubic root of 2166250019 is about 1293.9063965395.

The spelling of 2166250019 in words is "two billion, one hundred sixty-six million, two hundred fifty thousand, nineteen".

Divisors: 1 167 541 23977 90347 4004159 12971557 2166250019