9019972944 has 40 divisors (see below), whose sum is σ = 25890664320. Its totient is φ = 3006657504.

The previous prime is 9019972933. The next prime is 9019972987. The reversal of 9019972944 is 4492799109.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 10439352 + ... + 10440215.

It is an arithmetic number, because the mean of its divisors is an integer number (647266608).

Almost surely, 2^9019972944 is an apocalyptic number.

It is an amenable number.

9019972944 is an abundant number, since it is smaller than the sum of its proper divisors (16870691376).

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

9019972944 is a wasteful number, since it uses less digits than its factorization.

9019972944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20879584 (or 20879572 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 9019972944 is about 94973.5381251009. The cubic root of 9019972944 is about 2081.6214046375.

The spelling of 9019972944 in words is "nine billion, nineteen million, nine hundred seventy-two thousand, nine hundred forty-four".