18013500374 has 4 divisors (see below), whose sum is σ = 27020250564. Its totient is φ = 9006750186.

The previous prime is 18013500371. The next prime is 18013500391. The reversal of 18013500374 is 47300531081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18013500374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013500371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4503375092 + ... + 4503375095.

It is an arithmetic number, because the mean of its divisors is an integer number (6755062641).

Almost surely, 2^18013500374 is an apocalyptic number.

18013500374 is a deficient number, since it is larger than the sum of its proper divisors (9006750190).

18013500374 is an equidigital number, since it uses as much as digits as its factorization.

18013500374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006750189.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 18013500374 in words is "eighteen billion, thirteen million, five hundred thousand, three hundred seventy-four".