19914595980 has 24 divisors (see below), whose sum is σ = 55760868912. Its totient is φ = 5310558912.

The previous prime is 19914595963. The next prime is 19914595993. The reversal of 19914595980 is 8959541991.

It is a super-2 number, since 2×19914595980² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 331909933 = 19914595980 / (1 + 9 + 9 + 1 + 4 + 5 + 9 + 5 + 9 + 8 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165954907 + ... + 165955026.

It is an arithmetic number, because the mean of its divisors is an integer number (2323369538).

Almost surely, 2^19914595980 is an apocalyptic number.

19914595980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19914595980 is an abundant number, since it is smaller than the sum of its proper divisors (35846272932).

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

19914595980 is a wasteful number, since it uses less digits than its factorization.

19914595980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331909945 (or 331909943 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 60.

The spelling of 19914595980 in words is "nineteen billion, nine hundred fourteen million, five hundred ninety-five thousand, nine hundred eighty".