19958380416 has 96 divisors (see below), whose sum is σ = 61850235720. Its totient is φ = 6141035520.

The previous prime is 19958380399. The next prime is 19958380441. The reversal of 19958380416 is 61408385991.

19958380416 is a `hidden beast` number, since 19 + 9 + 583 + 8 + 0 + 41 + 6 = 666.

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, 651370 + ... + 681321.

Almost surely, 2^19958380416 is an apocalyptic number.

19958380416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19958380416 is an abundant number, since it is smaller than the sum of its proper divisors (41891855304).

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

19958380416 is a wasteful number, since it uses less digits than its factorization.

19958380416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332724 (or 1332709 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 19958380416 in words is "nineteen billion, nine hundred fifty-eight million, three hundred eighty thousand, four hundred sixteen".