18950677872 has 120 divisors (see below), whose sum is σ = 57398040576. Its totient is φ = 5371761024.

The previous prime is 18950677819. The next prime is 18950677901. The reversal of 18950677872 is 27877605981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266983 + ... + 330425.

Almost surely, 2^18950677872 is an apocalyptic number.

18950677872 is a gapful number since it is divisible by the number (12) 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 18950677872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28699020288).

18950677872 is an abundant number, since it is smaller than the sum of its proper divisors (38447362704).

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

18950677872 is a wasteful number, since it uses less digits than its factorization.

18950677872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63595 (or 63582 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 60.

The spelling of 18950677872 in words is "eighteen billion, nine hundred fifty million, six hundred seventy-seven thousand, eight hundred seventy-two".