18472343269 has 2 divisors, whose sum is σ = 18472343270. Its totient is φ = 18472343268.

The previous prime is 18472343261. The next prime is 18472343321. The reversal of 18472343269 is 96234327481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15311092644 + 3161250625 = 123738^2 + 56225^2 .

It is a cyclic number.

It is not a de Polignac number, because 18472343269 - 2³ = 18472343261 is a prime.

It is a super-2 number, since 2×18472343269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18472343261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236171634 + 9236171635.

It is an arithmetic number, because the mean of its divisors is an integer number (9236171635).

Almost surely, 2^18472343269 is an apocalyptic number.

It is an amenable number.

18472343269 is a deficient number, since it is larger than the sum of its proper divisors (1).

18472343269 is an equidigital number, since it uses as much as digits as its factorization.

18472343269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 49.

The spelling of 18472343269 in words is "eighteen billion, four hundred seventy-two million, three hundred forty-three thousand, two hundred sixty-nine".