1923699422172 has 72 divisors (see below), whose sum is σ = 4935050281728. Its totient is φ = 582789790880.

The previous prime is 1923699422111. The next prime is 1923699422179. The reversal of 1923699422172 is 2712249963291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923699422179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5563213 + ... + 5898875.

It is an arithmetic number, because the mean of its divisors is an integer number (68542365024).

Almost surely, 2^{1923699422172} is an apocalyptic number.

1923699422172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1923699422172 is an abundant number, since it is smaller than the sum of its proper divisors (3011350859556).

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

1923699422172 is a wasteful number, since it uses less digits than its factorization.

1923699422172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339639 (or 339626 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 57.

The spelling of 1923699422172 in words is "one trillion, nine hundred twenty-three billion, six hundred ninety-nine million, four hundred twenty-two thousand, one hundred seventy-two".