18538340375 has 16 divisors (see below), whose sum is σ = 24353528160. Its totient is φ = 14050108800.

The previous prime is 18538340341. The next prime is 18538340389. The reversal of 18538340375 is 57304383581.

It is not a de Polignac number, because 18538340375 - 2³⁰ = 17464598551 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3900434 + ... + 3905183.

It is an arithmetic number, because the mean of its divisors is an integer number (1522095510).

Almost surely, 2^18538340375 is an apocalyptic number.

18538340375 is a deficient number, since it is larger than the sum of its proper divisors (5815187785).

18538340375 is an equidigital number, since it uses as much as digits as its factorization.

18538340375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805651 (or 7805641 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 18538340375 in words is "eighteen billion, five hundred thirty-eight million, three hundred forty thousand, three hundred seventy-five".