19429518834 has 24 divisors (see below), whose sum is σ = 45924317712. Its totient is φ = 5887732920.

The previous prime is 19429518821. The next prime is 19429518839. The reversal of 19429518834 is 43881592491.

It is a happy number.

19429518834 is a `hidden beast` number, since 1 + 9 + 42 + 9 + 518 + 83 + 4 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19429518839) 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, 49064244 + ... + 49064639.

It is an arithmetic number, because the mean of its divisors is an integer number (1913513238).

Almost surely, 2^19429518834 is an apocalyptic number.

19429518834 is an abundant number, since it is smaller than the sum of its proper divisors (26494798878).

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

19429518834 is a wasteful number, since it uses less digits than its factorization.

19429518834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98128902 (or 98128899 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 19429518834 in words is "nineteen billion, four hundred twenty-nine million, five hundred eighteen thousand, eight hundred thirty-four".