538446731 has 4 divisors (see below), whose sum is σ = 550968792. Its totient is φ = 525924672.

The previous prime is 538446703. The next prime is 538446737. The reversal of 538446731 is 137644835.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538446731 is a prime.

It is a super-2 number, since 2×538446731² = 579849764249172722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538446737) 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, 6260966 + ... + 6261051.

It is an arithmetic number, because the mean of its divisors is an integer number (137742198).

Almost surely, 2^538446731 is an apocalyptic number.

538446731 is a deficient number, since it is larger than the sum of its proper divisors (12522061).

538446731 is a wasteful number, since it uses less digits than its factorization.

538446731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12522060.

The product of its digits is 241920, while the sum is 41.

The square root of 538446731 is about 23204.4549817487. The cubic root of 538446731 is about 813.5437535422.

The spelling of 538446731 in words is "five hundred thirty-eight million, four hundred forty-six thousand, seven hundred thirty-one".