19390684032 has 96 divisors (see below), whose sum is σ = 55842501000. Its totient is φ = 6458489856.

The previous prime is 19390684021. The next prime is 19390684051. The reversal of 19390684032 is 23048609391.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent 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, 1640319 + ... + 1652097.

Almost surely, 2^19390684032 is an apocalyptic number.

19390684032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19390684032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27921250500).

19390684032 is an abundant number, since it is smaller than the sum of its proper divisors (36451816968).

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

19390684032 is a wasteful number, since it uses less digits than its factorization.

19390684032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13228 (or 13213 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 19390684032 in words is "nineteen billion, three hundred ninety million, six hundred eighty-four thousand, thirty-two".