16157897 has 12 divisors (see below), whose sum is σ = 18864720. Its totient is φ = 13799016.

The previous prime is 16157887. The next prime is 16157899. The reversal of 16157897 is 79875161.

It is not a de Polignac number, because 16157897 - 2¹⁰ = 16156873 is a prime.

It is a super-2 number, since 2×16157897² = 522155270925218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16157899) 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 11 ways as a sum of consecutive naturals, for example, 20138 + ... + 20924.

It is an arithmetic number, because the mean of its divisors is an integer number (1572060).

Almost surely, 2^16157897 is an apocalyptic number.

It is an amenable number.

16157897 is a deficient number, since it is larger than the sum of its proper divisors (2706823).

16157897 is an equidigital number, since it uses as much as digits as its factorization.

16157897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1213 counting only the distinct ones).

The product of its digits is 105840, while the sum is 44.

The square root of 16157897 is about 4019.6886695365. The cubic root of 16157897 is about 252.8104054311.

The spelling of 16157897 in words is "sixteen million, one hundred fifty-seven thousand, eight hundred ninety-seven".