156940651 has 8 divisors (see below), whose sum is σ = 189911520. Its totient is φ = 126607488.

The previous prime is 156940613. The next prime is 156940681. The reversal of 156940651 is 156049651.

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

It is not a de Polignac number, because 156940651 - 2⁹ = 156940139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156940651.

It is not an unprimeable number, because it can be changed into a prime (156940681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659296 + ... + 659533.

It is an arithmetic number, because the mean of its divisors is an integer number (23738940).

Almost surely, 2^156940651 is an apocalyptic number.

156940651 is a deficient number, since it is larger than the sum of its proper divisors (32970869).

156940651 is a wasteful number, since it uses less digits than its factorization.

156940651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318853.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 156940651 is about 12527.5955793600. The cubic root of 156940651 is about 539.4010861046.

The spelling of 156940651 in words is "one hundred fifty-six million, nine hundred forty thousand, six hundred fifty-one".