19294171392 has 72 divisors (see below), whose sum is σ = 51634710400. Its totient is φ = 6395811840.

The previous prime is 19294171387. The next prime is 19294171399. The reversal of 19294171392 is 29317149291.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (19294171399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69609 + ... + 208407.

Almost surely, 2^19294171392 is an apocalyptic number.

19294171392 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 19294171392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25817355200).

19294171392 is an abundant number, since it is smaller than the sum of its proper divisors (32340539008).

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

19294171392 is a wasteful number, since it uses less digits than its factorization.

19294171392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138999 (or 138985 counting only the distinct ones).

The product of its digits is 244944, while the sum is 48.

The spelling of 19294171392 in words is "nineteen billion, two hundred ninety-four million, one hundred seventy-one thousand, three hundred ninety-two".