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1874161 = 374
BaseRepresentation
bin111001001100011110001
310112012212101
413021203301
5434433121
6104100401
721634012
oct7114361
93465771
101874161
1110700a3
12764701
13508093
1436b009
15270491
hex1c98f1

1874161 has 5 divisors (see below), whose sum is σ = 1926221. Its totient is φ = 1823508.

The previous prime is 1874153. The next prime is 1874177. The reversal of 1874161 is 1614781.

The square root of 1874161 is 1369.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1168561 + 705600 = 1081^2 + 840^2 .

It is not a de Polignac number, because 1874161 - 23 = 1874153 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1874161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1874101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 50635 + ... + 50671.

21874161 is an apocalyptic number.

1874161 is the 1369-th square number.

1874161 is the 685-th centered octagonal number.

It is an amenable number.

1874161 is a deficient number, since it is larger than the sum of its proper divisors (52060).

1874161 is an frugal number, since it uses more digits than its factorization.

1874161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 37 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The cubic root of 1874161 is about 123.2922085109.

The spelling of 1874161 in words is "one million, eight hundred seventy-four thousand, one hundred sixty-one".

Divisors: 1 37 1369 50653 1874161