19732357420 has 24 divisors (see below), whose sum is σ = 41460658848. Its totient is φ = 7888617600.

The previous prime is 19732357373. The next prime is 19732357423. The reversal of 19732357420 is 2475323791.

It is not an unprimeable number, because it can be changed into a prime (19732357423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232801 + ... + 306040.

It is an arithmetic number, because the mean of its divisors is an integer number (1727527452).

Almost surely, 2^19732357420 is an apocalyptic number.

19732357420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19732357420 is an abundant number, since it is smaller than the sum of its proper divisors (21728301428).

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

19732357420 is a wasteful number, since it uses less digits than its factorization.

19732357420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540681 (or 540679 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 19732357420 in words is "nineteen billion, seven hundred thirty-two million, three hundred fifty-seven thousand, four hundred twenty".