18940495756 has 48 divisors (see below), whose sum is σ = 40811029056. Its totient is φ = 7489983744.

The previous prime is 18940495703. The next prime is 18940495759. The reversal of 18940495756 is 65759404981.

It is a self number, because there is not a number n which added to its sum of digits gives 18940495756.

It is not an unprimeable number, because it can be changed into a prime (18940495759) 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, 1067550 + ... + 1085146.

It is an arithmetic number, because the mean of its divisors is an integer number (850229772).

Almost surely, 2^18940495756 is an apocalyptic number.

It is an amenable number.

18940495756 is an abundant number, since it is smaller than the sum of its proper divisors (21870533300).

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

18940495756 is a wasteful number, since it uses less digits than its factorization.

18940495756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20578 (or 20576 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 18940495756 in words is "eighteen billion, nine hundred forty million, four hundred ninety-five thousand, seven hundred fifty-six".