19913892102 has 24 divisors (see below), whose sum is σ = 46465748784. Its totient is φ = 6127351344.

The previous prime is 19913892101. The next prime is 19913892109. The reversal of 19913892102 is 20129831991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19913892101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42550818 + ... + 42551285.

It is an arithmetic number, because the mean of its divisors is an integer number (1936072866).

Almost surely, 2^19913892102 is an apocalyptic number.

19913892102 is an abundant number, since it is smaller than the sum of its proper divisors (26551856682).

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

19913892102 is a wasteful number, since it uses less digits than its factorization.

19913892102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85102124 (or 85102121 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 19913892102 in words is "nineteen billion, nine hundred thirteen million, eight hundred ninety-two thousand, one hundred two".