18472516081 has 8 divisors (see below), whose sum is σ = 19592465760. Its totient is φ = 17356269888.

The previous prime is 18472516039. The next prime is 18472516133. The reversal of 18472516081 is 18061527481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18472516081 - 2⁷ = 18472515953 is a prime.

It is a super-2 number, since 2×18472516081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18472516031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915591 + ... + 935548.

It is an arithmetic number, because the mean of its divisors is an integer number (2449058220).

Almost surely, 2^18472516081 is an apocalyptic number.

It is an amenable number.

18472516081 is a deficient number, since it is larger than the sum of its proper divisors (1119949679).

18472516081 is a wasteful number, since it uses less digits than its factorization.

18472516081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851743.

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 18472516081 in words is "eighteen billion, four hundred seventy-two million, five hundred sixteen thousand, eighty-one".