19202980780 has 12 divisors (see below), whose sum is σ = 40326259680. Its totient is φ = 7681192304.

The previous prime is 19202980777. The next prime is 19202980789. The reversal of 19202980780 is 8708920291.

It is a self number, because there is not a number n which added to its sum of digits gives 19202980780.

It is not an unprimeable number, because it can be changed into a prime (19202980789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480074500 + ... + 480074539.

It is an arithmetic number, because the mean of its divisors is an integer number (3360521640).

Almost surely, 2^19202980780 is an apocalyptic number.

19202980780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19202980780 is an abundant number, since it is smaller than the sum of its proper divisors (21123278900).

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

19202980780 is a wasteful number, since it uses less digits than its factorization.

19202980780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960149048 (or 960149046 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 19202980780 in words is "nineteen billion, two hundred two million, nine hundred eighty thousand, seven hundred eighty".