19709928930 has 32 divisors (see below), whose sum is σ = 48310297344. Its totient is φ = 5144151296.

The previous prime is 19709928923. The next prime is 19709928937. The reversal of 19709928930 is 3982990791.

It is an interprime number because it is at equal distance from previous prime (19709928923) and next prime (19709928937).

It is not an unprimeable number, because it can be changed into a prime (19709928937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6987927 + ... + 6990746.

It is an arithmetic number, because the mean of its divisors is an integer number (1509696792).

Almost surely, 2^19709928930 is an apocalyptic number.

19709928930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19709928930 is an abundant number, since it is smaller than the sum of its proper divisors (28600368414).

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

19709928930 is a wasteful number, since it uses less digits than its factorization.

19709928930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13978730.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The spelling of 19709928930 in words is "nineteen billion, seven hundred nine million, nine hundred twenty-eight thousand, nine hundred thirty".