19442680900 has 18 divisors (see below), whose sum is σ = 42190617770. Its totient is φ = 7777072320.

The previous prime is 19442680879. The next prime is 19442680903. The reversal of 19442680900 is 908624491.

It can be written as a sum of positive squares in 3 ways, for example, as 48776256 + 19393904644 = 6984^2 + 139262^2 .

It is not an unprimeable number, because it can be changed into a prime (19442680903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97213305 + ... + 97213504.

Almost surely, 2^19442680900 is an apocalyptic number.

19442680900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19442680900 is an abundant number, since it is smaller than the sum of its proper divisors (22747936870).

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

19442680900 is a wasteful number, since it uses less digits than its factorization.

19442680900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194426823 (or 194426816 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 19442680900 in words is "nineteen billion, four hundred forty-two million, six hundred eighty thousand, nine hundred".