18071963080 has 16 divisors (see below), whose sum is σ = 40661917020. Its totient is φ = 7228785216.

The previous prime is 18071963071. The next prime is 18071963083. The reversal of 18071963080 is 8036917081.

It can be written as a sum of positive squares in 2 ways, for example, as 17863391716 + 208571364 = 133654^2 + 14442^2 .

It is not an unprimeable number, because it can be changed into a prime (18071963083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225899499 + ... + 225899578.

Almost surely, 2^18071963080 is an apocalyptic number.

18071963080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18071963080 is an abundant number, since it is smaller than the sum of its proper divisors (22589953940).

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

18071963080 is a wasteful number, since it uses less digits than its factorization.

18071963080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451799088 (or 451799084 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 18071963080 in words is "eighteen billion, seventy-one million, nine hundred sixty-three thousand, eighty".