18472186793 has 2 divisors, whose sum is σ = 18472186794. Its totient is φ = 18472186792.

The previous prime is 18472186769. The next prime is 18472186801. The reversal of 18472186793 is 39768127481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17241790864 + 1230395929 = 131308^2 + 35077^2 .

It is a cyclic number.

It is not a de Polignac number, because 18472186793 - 2²² = 18467992489 is a prime.

It is not a weakly prime, because it can be changed into another prime (18472186493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236093396 + 9236093397.

It is an arithmetic number, because the mean of its divisors is an integer number (9236093397).

Almost surely, 2^18472186793 is an apocalyptic number.

It is an amenable number.

18472186793 is a deficient number, since it is larger than the sum of its proper divisors (1).

18472186793 is an equidigital number, since it uses as much as digits as its factorization.

18472186793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The spelling of 18472186793 in words is "eighteen billion, four hundred seventy-two million, one hundred eighty-six thousand, seven hundred ninety-three".