18941308672 has 144 divisors (see below), whose sum is σ = 44560262880. Its totient is φ = 7922073600.

The previous prime is 18941308663. The next prime is 18941308681. The reversal of 18941308672 is 27680314981.

It is an interprime number because it is at equal distance from previous prime (18941308663) and next prime (18941308681).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15411354 + ... + 15412582.

It is an arithmetic number, because the mean of its divisors is an integer number (309446270).

Almost surely, 2^18941308672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18941308672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22280131440).

18941308672 is an abundant number, since it is smaller than the sum of its proper divisors (25618954208).

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

18941308672 is a wasteful number, since it uses less digits than its factorization.

18941308672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 18941308672 in words is "eighteen billion, nine hundred forty-one million, three hundred eight thousand, six hundred seventy-two".