16539156 has 18 divisors (see below), whose sum is σ = 41807402. Its totient is φ = 5513040.

The previous prime is 16539119. The next prime is 16539163. The reversal of 16539156 is 65193561.

It can be written as a sum of positive squares in only one way, i.e., 15729156 + 810000 = 3966^2 + 900^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×16539156³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 459421 = 16539156 / (1 + 6 + 5 + 3 + 9 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 16539156.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 229675 + ... + 229746.

Almost surely, 2^16539156 is an apocalyptic number.

It is an amenable number.

16539156 is an abundant number, since it is smaller than the sum of its proper divisors (25268246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16539156 is a wasteful number, since it uses less digits than its factorization.

16539156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459431 (or 459426 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 16539156 is about 4066.8361166883. The cubic root of 16539156 is about 254.7833916031.

The spelling of 16539156 in words is "sixteen million, five hundred thirty-nine thousand, one hundred fifty-six".