19738279420 has 24 divisors (see below), whose sum is σ = 43888645584. Its totient is φ = 7430881536.

The previous prime is 19738279417. The next prime is 19738279427. The reversal of 19738279420 is 2497283791.

It is a hoax number, since the sum of its digits (52) 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 (19738279427) 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, 29026542 + ... + 29027221.

It is an arithmetic number, because the mean of its divisors is an integer number (1828693566).

Almost surely, 2^19738279420 is an apocalyptic number.

19738279420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19738279420 is an abundant number, since it is smaller than the sum of its proper divisors (24150366164).

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

19738279420 is a wasteful number, since it uses less digits than its factorization.

19738279420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58053789 (or 58053787 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 19738279420 in words is "nineteen billion, seven hundred thirty-eight million, two hundred seventy-nine thousand, four hundred twenty".