18283669 has 2 divisors, whose sum is σ = 18283670. Its totient is φ = 18283668.

The previous prime is 18283667. The next prime is 18283673. The reversal of 18283669 is 96638281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 119025 = 4262^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 18283669 - 2¹ = 18283667 is a prime.

It is a super-2 number, since 2×18283669² = 668585104203122, which contains 22 as substring.

Together with 18283667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18283667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141834 + 9141835.

It is an arithmetic number, because the mean of its divisors is an integer number (9141835).

Almost surely, 2^18283669 is an apocalyptic number.

It is an amenable number.

18283669 is a deficient number, since it is larger than the sum of its proper divisors (1).

18283669 is an equidigital number, since it uses as much as digits as its factorization.

18283669 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 18283669 is about 4275.9407152111. The cubic root of 18283669 is about 263.4436794751.

The spelling of 18283669 in words is "eighteen million, two hundred eighty-three thousand, six hundred sixty-nine".