19867000934 has 16 divisors (see below), whose sum is σ = 32994858816. Its totient is φ = 8895671400.

The previous prime is 19867000919. The next prime is 19867000957. The reversal of 19867000934 is 43900076891.

It is a super-2 number, since 2×19867000934² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6737672 + ... + 6740619.

It is an arithmetic number, because the mean of its divisors is an integer number (2062178676).

Almost surely, 2^19867000934 is an apocalyptic number.

19867000934 is a deficient number, since it is larger than the sum of its proper divisors (13127857882).

19867000934 is a wasteful number, since it uses less digits than its factorization.

19867000934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478371.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 19867000934 in words is "nineteen billion, eight hundred sixty-seven million, nine hundred thirty-four", and thus it is an aban number.