18735294942 has 72 divisors (see below), whose sum is σ = 50852974536. Its totient is φ = 4941173664.

The previous prime is 18735294923. The next prime is 18735294947. The reversal of 18735294942 is 24949253781.

18735294942 is a `hidden beast` number, since 1 + 8 + 73 + 529 + 4 + 9 + 42 = 666.

It is a super-2 number, since 2×18735294942² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18735294947) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 805528 + ... + 828459.

It is an arithmetic number, because the mean of its divisors is an integer number (706291313).

Almost surely, 2^18735294942 is an apocalyptic number.

18735294942 is an abundant number, since it is smaller than the sum of its proper divisors (32117679594).

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

18735294942 is a wasteful number, since it uses less digits than its factorization.

18735294942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634022 (or 1634012 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 18735294942 in words is "eighteen billion, seven hundred thirty-five million, two hundred ninety-four thousand, nine hundred forty-two".