19621483924 has 12 divisors (see below), whose sum is σ = 39242967904. Its totient is φ = 8409207384.

The previous prime is 19621483919. The next prime is 19621483927. The reversal of 19621483924 is 42938412691.

It is a happy number.

19621483924 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19621483927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350383614 + ... + 350383669.

Almost surely, 2^19621483924 is an apocalyptic number.

19621483924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19621483924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19621483924 is a wasteful number, since it uses less digits than its factorization.

19621483924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700767294 (or 700767292 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The spelling of 19621483924 in words is "nineteen billion, six hundred twenty-one million, four hundred eighty-three thousand, nine hundred twenty-four".