18630583813 has 16 divisors (see below), whose sum is σ = 19428710400. Its totient is φ = 17850374640.

The previous prime is 18630583801. The next prime is 18630583843. The reversal of 18630583813 is 31838503681.

It is a cyclic number.

It is not a de Polignac number, because 18630583813 - 2¹⁷ = 18630452741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18630583843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207558 + ... + 1222888.

It is an arithmetic number, because the mean of its divisors is an integer number (1214294400).

Almost surely, 2^18630583813 is an apocalyptic number.

It is an amenable number.

18630583813 is a deficient number, since it is larger than the sum of its proper divisors (798126587).

18630583813 is a wasteful number, since it uses less digits than its factorization.

18630583813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15912.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 18630583813 in words is "eighteen billion, six hundred thirty million, five hundred eighty-three thousand, eight hundred thirteen".