537692161 has 4 divisors (see below), whose sum is σ = 556233300. Its totient is φ = 519151024.

The previous prime is 537692149. The next prime is 537692209. The reversal of 537692161 is 161296735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 392634225 + 145057936 = 19815^2 + 12044^2 .

It is a cyclic number.

It is not a de Polignac number, because 537692161 - 2²⁵ = 504137729 is a prime.

It is a super-2 number, since 2×537692161² = 578225720001699842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537692101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9270526 + ... + 9270583.

It is an arithmetic number, because the mean of its divisors is an integer number (139058325).

Almost surely, 2^537692161 is an apocalyptic number.

It is an amenable number.

537692161 is a deficient number, since it is larger than the sum of its proper divisors (18541139).

537692161 is a wasteful number, since it uses less digits than its factorization.

537692161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18541138.

The product of its digits is 68040, while the sum is 40.

The square root of 537692161 is about 23188.1901191102. The cubic root of 537692161 is about 813.1635471346.

The spelling of 537692161 in words is "five hundred thirty-seven million, six hundred ninety-two thousand, one hundred sixty-one".