156390345 has 20 divisors (see below), whose sum is σ = 280344900. Its totient is φ = 83407968.

The previous prime is 156390337. The next prime is 156390371. The reversal of 156390345 is 543093651.

156390345 is a `hidden beast` number, since 1 + 563 + 90 + 3 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 111070521 + 45319824 = 10539^2 + 6732^2 .

It is not a de Polignac number, because 156390345 - 2³ = 156390337 is a prime.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 192670 + ... + 193479.

It is an arithmetic number, because the mean of its divisors is an integer number (14017245).

Almost surely, 2^156390345 is an apocalyptic number.

156390345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156390345 is a deficient number, since it is larger than the sum of its proper divisors (123954555).

156390345 is an equidigital number, since it uses as much as digits as its factorization.

156390345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386166 (or 386157 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 156390345 is about 12505.6125399758. The cubic root of 156390345 is about 538.7698851230.

The spelling of 156390345 in words is "one hundred fifty-six million, three hundred ninety thousand, three hundred forty-five".