18252973434 has 16 divisors (see below), whose sum is σ = 37396336320. Its totient is φ = 5935926240.

The previous prime is 18252973399. The next prime is 18252973493. The reversal of 18252973434 is 43437925281.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37099294 + ... + 37099785.

It is an arithmetic number, because the mean of its divisors is an integer number (2337271020).

Almost surely, 2^18252973434 is an apocalyptic number.

18252973434 is an abundant number, since it is smaller than the sum of its proper divisors (19143362886).

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

18252973434 is a wasteful number, since it uses less digits than its factorization.

18252973434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74199125.

The product of its digits is 1451520, while the sum is 48.

The spelling of 18252973434 in words is "eighteen billion, two hundred fifty-two million, nine hundred seventy-three thousand, four hundred thirty-four".