156116690 has 32 divisors (see below), whose sum is σ = 293378544. Its totient is φ = 59754240.

The previous prime is 156116683. The next prime is 156116693. The reversal of 156116690 is 96611651.

It can be written as a sum of positive squares in 8 ways, for example, as 67059721 + 89056969 = 8189^2 + 9437^2 .

It is a super-2 number, since 2×156116690² = 48744841793112200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 156116690.

It is not an unprimeable number, because it can be changed into a prime (156116693) 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 15 ways as a sum of consecutive naturals, for example, 19112 + ... + 26028.

Almost surely, 2^156116690 is an apocalyptic number.

156116690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156116690 is a deficient number, since it is larger than the sum of its proper divisors (137261854).

156116690 is a wasteful number, since it uses less digits than its factorization.

156116690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 156116690 is about 12494.6664621350. Note that the first 3 decimals coincide. The cubic root of 156116690 is about 538.4554514906.

The spelling of 156116690 in words is "one hundred fifty-six million, one hundred sixteen thousand, six hundred ninety".