18633535057 has 4 divisors (see below), whose sum is σ = 18635632240. Its totient is φ = 18631437876.

The previous prime is 18633535033. The next prime is 18633535069. The reversal of 18633535057 is 75053533681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18633535057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18633534998 and 18633535016.

It is not an unprimeable number, because it can be changed into a prime (18633535027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035207 + ... + 1053052.

It is an arithmetic number, because the mean of its divisors is an integer number (4658908060).

Almost surely, 2^18633535057 is an apocalyptic number.

It is an amenable number.

18633535057 is a deficient number, since it is larger than the sum of its proper divisors (2097183).

18633535057 is an equidigital number, since it uses as much as digits as its factorization.

18633535057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097182.

The product of its (nonzero) digits is 1134000, while the sum is 46.

The spelling of 18633535057 in words is "eighteen billion, six hundred thirty-three million, five hundred thirty-five thousand, fifty-seven".