18942391716 has 24 divisors (see below), whose sum is σ = 44317420224. Its totient is φ = 6297201120.

The previous prime is 18942391711. The next prime is 18942391723. The reversal of 18942391716 is 61719324981.

It is not an unprimeable number, because it can be changed into a prime (18942391711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111520 + ... + 2120471.

It is an arithmetic number, because the mean of its divisors is an integer number (1846559176).

Almost surely, 2^18942391716 is an apocalyptic number.

It is an amenable number.

18942391716 is an abundant number, since it is smaller than the sum of its proper divisors (25375028508).

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

18942391716 is a wasteful number, since it uses less digits than its factorization.

18942391716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232371 (or 4232369 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The spelling of 18942391716 in words is "eighteen billion, nine hundred forty-two million, three hundred ninety-one thousand, seven hundred sixteen".