156900091 has 8 divisors (see below), whose sum is σ = 161434944. Its totient is φ = 152380800.

The previous prime is 156900067. The next prime is 156900097. The reversal of 156900091 is 190009651.

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

It is a de Polignac number, because none of the positive numbers 2^k-156900091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156900097) 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, 18366 + ... + 25516.

It is an arithmetic number, because the mean of its divisors is an integer number (20179368).

Almost surely, 2^156900091 is an apocalyptic number.

156900091 is a deficient number, since it is larger than the sum of its proper divisors (4534853).

156900091 is an equidigital number, since it uses as much as digits as its factorization.

156900091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7781.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 156900091 is about 12525.9766485492. The cubic root of 156900091 is about 539.3546141996.

The spelling of 156900091 in words is "one hundred fifty-six million, nine hundred thousand, ninety-one".