18258667069 has 2 divisors, whose sum is σ = 18258667070. Its totient is φ = 18258667068.

The previous prime is 18258667051. The next prime is 18258667079. The reversal of 18258667069 is 96076685281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17132192100 + 1126474969 = 130890^2 + 33563^2 .

It is a cyclic number.

It is not a de Polignac number, because 18258667069 - 2¹³ = 18258658877 is a prime.

It is a super-2 number, since 2×18258667069² (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 (18258667079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9129333534 + 9129333535.

It is an arithmetic number, because the mean of its divisors is an integer number (9129333535).

Almost surely, 2^18258667069 is an apocalyptic number.

It is an amenable number.

18258667069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18258667069 is an equidigital number, since it uses as much as digits as its factorization.

18258667069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 18258667069 in words is "eighteen billion, two hundred fifty-eight million, six hundred sixty-seven thousand, sixty-nine".