16157187 has 12 divisors (see below), whose sum is σ = 23390640. Its totient is φ = 10747248.

The previous prime is 16157177. The next prime is 16157189. The reversal of 16157187 is 78175161.

It is a happy number.

16157187 is a `hidden beast` number, since 1 + 6 + 1 + 571 + 87 = 666.

It is not a de Polignac number, because 16157187 - 2⁴ = 16157171 is a prime.

It is a super-2 number, since 2×16157187² = 522109383505938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16157189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2818 + ... + 6344.

It is an arithmetic number, because the mean of its divisors is an integer number (1949220).

Almost surely, 2^16157187 is an apocalyptic number.

16157187 is a deficient number, since it is larger than the sum of its proper divisors (7233453).

16157187 is a wasteful number, since it uses less digits than its factorization.

16157187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042 (or 4039 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The square root of 16157187 is about 4019.6003532690. The cubic root of 16157187 is about 252.8067024324.

The spelling of 16157187 in words is "sixteen million, one hundred fifty-seven thousand, one hundred eighty-seven".