18881444722 has 64 divisors (see below), whose sum is σ = 34874800128. Its totient is φ = 7495488000.

The previous prime is 18881444713. The next prime is 18881444737. The reversal of 18881444722 is 22744418881.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 933072 + ... + 953092.

It is an arithmetic number, because the mean of its divisors is an integer number (544918752).

Almost surely, 2^18881444722 is an apocalyptic number.

18881444722 is a deficient number, since it is larger than the sum of its proper divisors (15993355406).

18881444722 is a wasteful number, since it uses less digits than its factorization.

18881444722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20155.

The product of its digits is 917504, while the sum is 49.

The spelling of 18881444722 in words is "eighteen billion, eight hundred eighty-one million, four hundred forty-four thousand, seven hundred twenty-two".