18970814780 has 24 divisors (see below), whose sum is σ = 40142828880. Its totient is φ = 7530398720.

The previous prime is 18970814773. The next prime is 18970814789. The reversal of 18970814780 is 8741807981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18970814789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3617765 + ... + 3623004.

It is an arithmetic number, because the mean of its divisors is an integer number (1672617870).

Almost surely, 2^18970814780 is an apocalyptic number.

18970814780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18970814780 is an abundant number, since it is smaller than the sum of its proper divisors (21172014100).

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

18970814780 is a wasteful number, since it uses less digits than its factorization.

18970814780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7240909 (or 7240907 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 53.

The spelling of 18970814780 in words is "eighteen billion, nine hundred seventy million, eight hundred fourteen thousand, seven hundred eighty".