18160573478 has 4 divisors (see below), whose sum is σ = 27240860220. Its totient is φ = 9080286738.

The previous prime is 18160573477. The next prime is 18160573489. The reversal of 18160573478 is 87437506181.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18160573471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4540143368 + ... + 4540143371.

It is an arithmetic number, because the mean of its divisors is an integer number (6810215055).

Almost surely, 2^18160573478 is an apocalyptic number.

18160573478 is a deficient number, since it is larger than the sum of its proper divisors (9080286742).

18160573478 is an equidigital number, since it uses as much as digits as its factorization.

18160573478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080286741.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 18160573478 in words is "eighteen billion, one hundred sixty million, five hundred seventy-three thousand, four hundred seventy-eight".