18242435971 has 16 divisors (see below), whose sum is σ = 19692534400. Its totient is φ = 16843111488.

The previous prime is 18242435903. The next prime is 18242435977. The reversal of 18242435971 is 17953424281.

It is not a de Polignac number, because 18242435971 - 2²⁵ = 18208881539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18242435977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348940 + ... + 397798.

It is an arithmetic number, because the mean of its divisors is an integer number (1230783400).

Almost surely, 2^18242435971 is an apocalyptic number.

18242435971 is a deficient number, since it is larger than the sum of its proper divisors (1450098429).

18242435971 is a wasteful number, since it uses less digits than its factorization.

18242435971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49378.

The product of its digits is 483840, while the sum is 46.

The spelling of 18242435971 in words is "eighteen billion, two hundred forty-two million, four hundred thirty-five thousand, nine hundred seventy-one".