19405308372 has 24 divisors (see below), whose sum is σ = 45349708992. Its totient is φ = 6458342400.

The previous prime is 19405308301. The next prime is 19405308431. The reversal of 19405308372 is 27380350491.

It is a congruent number.

It is an unprimeable number.

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, 1253704 + ... + 1269087.

It is an arithmetic number, because the mean of its divisors is an integer number (1889571208).

Almost surely, 2^19405308372 is an apocalyptic number.

19405308372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19405308372 is an abundant number, since it is smaller than the sum of its proper divisors (25944400620).

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

19405308372 is a wasteful number, since it uses less digits than its factorization.

19405308372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523439 (or 2523437 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 19405308372 in words is "nineteen billion, four hundred five million, three hundred eight thousand, three hundred seventy-two".