537665418 has 32 divisors (see below), whose sum is σ = 1196872320. Its totient is φ = 178912800.

The previous prime is 537665417. The next prime is 537665467. The reversal of 537665418 is 814566735.

537665418 is a `hidden beast` number, since 537 + 66 + 54 + 1 + 8 = 666.

It is a super-2 number, since 2×537665418² = 578168203426229448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (537665417) 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 15 ways as a sum of consecutive naturals, for example, 24171 + ... + 40737.

It is an arithmetic number, because the mean of its divisors is an integer number (37402260).

Almost surely, 2^537665418 is an apocalyptic number.

537665418 is an abundant number, since it is smaller than the sum of its proper divisors (659206902).

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

537665418 is a wasteful number, since it uses less digits than its factorization.

537665418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17179 (or 17173 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 537665418 is about 23187.6134606389. The cubic root of 537665418 is about 813.1500655710.

The spelling of 537665418 in words is "five hundred thirty-seven million, six hundred sixty-five thousand, four hundred eighteen".