18282457 has 2 divisors, whose sum is σ = 18282458. Its totient is φ = 18282456.

The previous prime is 18282443. The next prime is 18282479. The reversal of 18282457 is 75428281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18113536 + 168921 = 4256^2 + 411^2 .

It is a cyclic number.

It is not a de Polignac number, because 18282457 - 2¹⁵ = 18249689 is a prime.

It is not a weakly prime, because it can be changed into another prime (18282437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141228 + 9141229.

It is an arithmetic number, because the mean of its divisors is an integer number (9141229).

Almost surely, 2^18282457 is an apocalyptic number.

It is an amenable number.

18282457 is a deficient number, since it is larger than the sum of its proper divisors (1).

18282457 is an equidigital number, since it uses as much as digits as its factorization.

18282457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 37.

The square root of 18282457 is about 4275.7989896626. The cubic root of 18282457 is about 263.4378582366.

The spelling of 18282457 in words is "eighteen million, two hundred eighty-two thousand, four hundred fifty-seven".