18244969 has 2 divisors, whose sum is σ = 18244970. Its totient is φ = 18244968.

The previous prime is 18244951. The next prime is 18244987. The reversal of 18244969 is 96944281.

It is a balanced prime because it is at equal distance from previous prime (18244951) and next prime (18244987).

It can be written as a sum of positive squares in only one way, i.e., 15303744 + 2941225 = 3912^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 18244969 - 2⁷ = 18244841 is a prime.

It is a super-2 number, since 2×18244969² = 665757787621922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18244909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122484 + 9122485.

It is an arithmetic number, because the mean of its divisors is an integer number (9122485).

Almost surely, 2^18244969 is an apocalyptic number.

It is an amenable number.

18244969 is a deficient number, since it is larger than the sum of its proper divisors (1).

18244969 is an equidigital number, since it uses as much as digits as its factorization.

18244969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 18244969 is about 4271.4129980605. The cubic root of 18244969 is about 263.2576761058.

The spelling of 18244969 in words is "eighteen million, two hundred forty-four thousand, nine hundred sixty-nine".