538541731 has 16 divisors (see below), whose sum is σ = 666905344. Its totient is φ = 423473184.

The previous prime is 538541713. The next prime is 538541737. The reversal of 538541731 is 137145835.

It is a cyclic number.

It is not a de Polignac number, because 538541731 - 2¹⁹ = 538017443 is a prime.

It is a super-2 number, since 2×538541731² = 580054392056952722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (538541737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3321 + ... + 32986.

It is an arithmetic number, because the mean of its divisors is an integer number (41681584).

Almost surely, 2^538541731 is an apocalyptic number.

538541731 is a deficient number, since it is larger than the sum of its proper divisors (128363613).

538541731 is a wasteful number, since it uses less digits than its factorization.

538541731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36490.

The product of its digits is 50400, while the sum is 37.

The square root of 538541731 is about 23206.5019121797. The cubic root of 538541731 is about 813.5915961651.

The spelling of 538541731 in words is "five hundred thirty-eight million, five hundred forty-one thousand, seven hundred thirty-one".