19942002864 has 240 divisors, whose sum is σ = 68394193920. Its totient is φ = 5294315520.

The previous prime is 19942002853. The next prime is 19942002893. The reversal of 19942002864 is 46820024991.

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 47 ways as a sum of consecutive naturals, for example, 1346379 + ... + 1361109.

It is an arithmetic number, because the mean of its divisors is an integer number (284975808).

Almost surely, 2^19942002864 is an apocalyptic number.

19942002864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19942002864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34197096960).

19942002864 is an abundant number, since it is smaller than the sum of its proper divisors (48452191056).

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

19942002864 is a wasteful number, since it uses less digits than its factorization.

19942002864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14848 (or 14839 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 19942002864 in words is "nineteen billion, nine hundred forty-two million, two thousand, eight hundred sixty-four".