509466631 has 2 divisors, whose sum is σ = 509466632. Its totient is φ = 509466630.

The previous prime is 509466619. The next prime is 509466637. The reversal of 509466631 is 136664905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509466631 - 2⁵ = 509466599 is a prime.

It is a super-2 number, since 2×509466631² = 519112496204980322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509466637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254733315 + 254733316.

It is an arithmetic number, because the mean of its divisors is an integer number (254733316).

Almost surely, 2^509466631 is an apocalyptic number.

509466631 is a deficient number, since it is larger than the sum of its proper divisors (1).

509466631 is an equidigital number, since it uses as much as digits as its factorization.

509466631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 509466631 is about 22571.3675039861. The cubic root of 509466631 is about 798.6783547488.

The spelling of 509466631 in words is "five hundred nine million, four hundred sixty-six thousand, six hundred thirty-one".