18478597434 has 32 divisors (see below), whose sum is σ = 40370028480. Its totient is φ = 5592201600.

The previous prime is 18478597429. The next prime is 18478597441. The reversal of 18478597434 is 43479587481.

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, 133729 + ... + 234180.

It is an arithmetic number, because the mean of its divisors is an integer number (1261563390).

Almost surely, 2^18478597434 is an apocalyptic number.

18478597434 is an abundant number, since it is smaller than the sum of its proper divisors (21891431046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18478597434 is a wasteful number, since it uses less digits than its factorization.

18478597434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368686.

The product of its digits is 27095040, while the sum is 60.

The spelling of 18478597434 in words is "eighteen billion, four hundred seventy-eight million, five hundred ninety-seven thousand, four hundred thirty-four".