19420120344 has 64 divisors (see below), whose sum is σ = 48940416000. Its totient is φ = 6421438080.

The previous prime is 19420120337. The next prime is 19420120373. The reversal of 19420120344 is 44302102491.

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 15 ways as a sum of consecutive naturals, for example, 7141017 + ... + 7143735.

It is an arithmetic number, because the mean of its divisors is an integer number (764694000).

Almost surely, 2^19420120344 is an apocalyptic number.

It is an amenable number.

19420120344 is an abundant number, since it is smaller than the sum of its proper divisors (29520295656).

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

19420120344 is a wasteful number, since it uses less digits than its factorization.

19420120344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008 (or 5004 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 19420120344 in words is "nineteen billion, four hundred twenty million, one hundred twenty thousand, three hundred forty-four".