738405631 has 2 divisors, whose sum is σ = 738405632. Its totient is φ = 738405630.

The previous prime is 738405623. The next prime is 738405637. The reversal of 738405631 is 136504837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 738405631 - 2³ = 738405623 is a prime.

It is a super-2 number, since 2×738405631² = 1090485751785016322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738405637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369202815 + 369202816.

It is an arithmetic number, because the mean of its divisors is an integer number (369202816).

Almost surely, 2^738405631 is an apocalyptic number.

738405631 is a deficient number, since it is larger than the sum of its proper divisors (1).

738405631 is an equidigital number, since it uses as much as digits as its factorization.

738405631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 738405631 is about 27173.6201305604. The cubic root of 738405631 is about 903.8541019244.

The spelling of 738405631 in words is "seven hundred thirty-eight million, four hundred five thousand, six hundred thirty-one".