19399887932 has 6 divisors (see below), whose sum is σ = 33949803888. Its totient is φ = 9699943964.

The previous prime is 19399887919. The next prime is 19399887979. The reversal of 19399887932 is 23978899391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2424985988 + ... + 2424985995.

It is an arithmetic number, because the mean of its divisors is an integer number (5658300648).

Almost surely, 2^19399887932 is an apocalyptic number.

It is an amenable number.

19399887932 is a deficient number, since it is larger than the sum of its proper divisors (14549915956).

19399887932 is a wasteful number, since it uses less digits than its factorization.

19399887932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849971987 (or 4849971985 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 68.

The spelling of 19399887932 in words is "nineteen billion, three hundred ninety-nine million, eight hundred eighty-seven thousand, nine hundred thirty-two".