508618493 has 2 divisors, whose sum is σ = 508618494. Its totient is φ = 508618492.

The previous prime is 508618471. The next prime is 508618499. The reversal of 508618493 is 394816805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500103769 + 8514724 = 22363^2 + 2918^2 .

It is a cyclic number.

It is not a de Polignac number, because 508618493 - 2¹⁴ = 508602109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508618499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254309246 + 254309247.

It is an arithmetic number, because the mean of its divisors is an integer number (254309247).

Almost surely, 2^508618493 is an apocalyptic number.

It is an amenable number.

508618493 is a deficient number, since it is larger than the sum of its proper divisors (1).

508618493 is an equidigital number, since it uses as much as digits as its factorization.

508618493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 508618493 is about 22552.5717602228. The cubic root of 508618493 is about 798.2349068594.

The spelling of 508618493 in words is "five hundred eight million, six hundred eighteen thousand, four hundred ninety-three".