19642244130 has 24 divisors (see below), whose sum is σ = 51069834972. Its totient is φ = 5237931744.

The previous prime is 19642244129. The next prime is 19642244143. The reversal of 19642244130 is 3144224691.

19642244130 is a `hidden beast` number, since 1 + 9 + 642 + 2 + 4 + 4 + 1 + 3 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19499608881 + 142635249 = 139641^2 + 11943^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109123489 + ... + 109123668.

Almost surely, 2^19642244130 is an apocalyptic number.

19642244130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19642244130 is an abundant number, since it is smaller than the sum of its proper divisors (31427590842).

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

19642244130 is a wasteful number, since it uses less digits than its factorization.

19642244130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218247170 (or 218247167 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 19642244130 in words is "nineteen billion, six hundred forty-two million, two hundred forty-four thousand, one hundred thirty".