156149290 has 24 divisors (see below), whose sum is σ = 308945700. Its totient is φ = 56781120.

The previous prime is 156149269. The next prime is 156149291. The reversal of 156149290 is 92941651.

It can be written as a sum of positive squares in 2 ways, for example, as 149352841 + 6796449 = 12221^2 + 2607^2 .

It is not an unprimeable number, because it can be changed into a prime (156149291) 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 11 ways as a sum of consecutive naturals, for example, 63315 + ... + 65734.

Almost surely, 2^156149290 is an apocalyptic number.

156149290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156149290 is a deficient number, since it is larger than the sum of its proper divisors (152796410).

156149290 is a wasteful number, since it uses less digits than its factorization.

156149290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129078 (or 129067 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 156149290 is about 12495.9709506705. The cubic root of 156149290 is about 538.4929286410.

The spelling of 156149290 in words is "one hundred fifty-six million, one hundred forty-nine thousand, two hundred ninety".