18124969 has 2 divisors, whose sum is σ = 18124970. Its totient is φ = 18124968.

The previous prime is 18124949. The next prime is 18124979. The reversal of 18124969 is 96942181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10969344 + 7155625 = 3312^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 18124969 - 2⁵ = 18124937 is a prime.

It is a super-2 number, since 2×18124969² = 657029002501922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18124919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9062484 + 9062485.

It is an arithmetic number, because the mean of its divisors is an integer number (9062485).

Almost surely, 2^18124969 is an apocalyptic number.

It is an amenable number.

18124969 is a deficient number, since it is larger than the sum of its proper divisors (1).

18124969 is an equidigital number, since it uses as much as digits as its factorization.

18124969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 18124969 is about 4257.3429507147. The cubic root of 18124969 is about 262.6792438671.

The spelling of 18124969 in words is "eighteen million, one hundred twenty-four thousand, nine hundred sixty-nine".