18453059507 has 4 divisors (see below), whose sum is σ = 18549672576. Its totient is φ = 18356446440.

The previous prime is 18453059447. The next prime is 18453059557. The reversal of 18453059507 is 70595035481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18453059507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18453059557) 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, 48306248 + ... + 48306629.

It is an arithmetic number, because the mean of its divisors is an integer number (4637418144).

Almost surely, 2^18453059507 is an apocalyptic number.

18453059507 is a deficient number, since it is larger than the sum of its proper divisors (96613069).

18453059507 is an equidigital number, since it uses as much as digits as its factorization.

18453059507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96613068.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 18453059507 in words is "eighteen billion, four hundred fifty-three million, fifty-nine thousand, five hundred seven".