538380631 has 2 divisors, whose sum is σ = 538380632. Its totient is φ = 538380630.

The previous prime is 538380611. The next prime is 538380643. The reversal of 538380631 is 136083835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538380631 - 2¹¹ = 538378583 is a prime.

It is a super-2 number, since 2×538380631² = 579707407671916322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538380611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269190315 + 269190316.

It is an arithmetic number, because the mean of its divisors is an integer number (269190316).

Almost surely, 2^538380631 is an apocalyptic number.

538380631 is a deficient number, since it is larger than the sum of its proper divisors (1).

538380631 is an equidigital number, since it uses as much as digits as its factorization.

538380631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 538380631 is about 23203.0306425691. The cubic root of 538380631 is about 813.5104618288.

The spelling of 538380631 in words is "five hundred thirty-eight million, three hundred eighty thousand, six hundred thirty-one".