18005051874 has 16 divisors (see below), whose sum is σ = 36293649408. Its totient is φ = 5954426352.

The previous prime is 18005051873. The next prime is 18005051893. The reversal of 18005051874 is 47815050081.

It is not an unprimeable number, because it can be changed into a prime (18005051873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11813577 + ... + 11815100.

It is an arithmetic number, because the mean of its divisors is an integer number (2268353088).

Almost surely, 2^18005051874 is an apocalyptic number.

18005051874 is an abundant number, since it is smaller than the sum of its proper divisors (18288597534).

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

18005051874 is a wasteful number, since it uses less digits than its factorization.

18005051874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23628809.

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 18005051874 in words is "eighteen billion, five million, fifty-one thousand, eight hundred seventy-four".