19733950840 has 32 divisors (see below), whose sum is σ = 44658060480. Its totient is φ = 7847949952.

The previous prime is 19733950807. The next prime is 19733950853. The reversal of 19733950840 is 4805933791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418944 + ... + 1432783.

It is an arithmetic number, because the mean of its divisors is an integer number (1395564390).

Almost surely, 2^19733950840 is an apocalyptic number.

19733950840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19733950840 is an abundant number, since it is smaller than the sum of its proper divisors (24924109640).

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

19733950840 is a wasteful number, since it uses less digits than its factorization.

19733950840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851911 (or 2851907 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 19733950840 in words is "nineteen billion, seven hundred thirty-three million, nine hundred fifty thousand, eight hundred forty".