16397157 has 8 divisors (see below), whose sum is σ = 24986176. Its totient is φ = 9369792.

The previous prime is 16397141. The next prime is 16397167. The reversal of 16397157 is 75179361.

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

It is not a de Polignac number, because 16397157 - 2⁴ = 16397141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16397107) 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, 390388 + ... + 390429.

It is an arithmetic number, because the mean of its divisors is an integer number (3123272).

Almost surely, 2^16397157 is an apocalyptic number.

It is an amenable number.

16397157 is a deficient number, since it is larger than the sum of its proper divisors (8589019).

16397157 is an equidigital number, since it uses as much as digits as its factorization.

16397157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780827.

The product of its digits is 39690, while the sum is 39.

The square root of 16397157 is about 4049.3403166442. The cubic root of 16397157 is about 254.0521365686.

The spelling of 16397157 in words is "sixteen million, three hundred ninety-seven thousand, one hundred fifty-seven".