19640938130 has 32 divisors (see below), whose sum is σ = 39055875840. Its totient is φ = 7051749120.

The previous prime is 19640938127. The next prime is 19640938157. The reversal of 19640938130 is 3183904691.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1121399 + ... + 1138778.

It is an arithmetic number, because the mean of its divisors is an integer number (1220496120).

Almost surely, 2^19640938130 is an apocalyptic number.

19640938130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19640938130 is a deficient number, since it is larger than the sum of its proper divisors (19414937710).

19640938130 is a wasteful number, since it uses less digits than its factorization.

19640938130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260274.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 19640938130 in words is "nineteen billion, six hundred forty million, nine hundred thirty-eight thousand, one hundred thirty".