18969493760 has 72 divisors (see below), whose sum is σ = 51929013696. Its totient is φ = 6503823360.

The previous prime is 18969493759. The next prime is 18969493783. The reversal of 18969493760 is 6739496981.

It is a junction number, because it is equal to n+sod(n) for n = 18969493693 and 18969493702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049606 + ... + 1067525.

Almost surely, 2^18969493760 is an apocalyptic number.

18969493760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18969493760 is an abundant number, since it is smaller than the sum of its proper divisors (32959519936).

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

18969493760 is an equidigital number, since it uses as much as digits as its factorization.

18969493760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117159 (or 2117145 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 18969493760 in words is "eighteen billion, nine hundred sixty-nine million, four hundred ninety-three thousand, seven hundred sixty".