18474017 has 2 divisors, whose sum is σ = 18474018. Its totient is φ = 18474016.

The previous prime is 18474007. The next prime is 18474059. The reversal of 18474017 is 71047481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 6370576 = 3479^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 18474017 - 2¹² = 18469921 is a prime.

It is equal to p_1179626 and since 18474017 and 1179626 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (18474007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237008 + 9237009.

It is an arithmetic number, because the mean of its divisors is an integer number (9237009).

Almost surely, 2^18474017 is an apocalyptic number.

It is an amenable number.

18474017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18474017 is an equidigital number, since it uses as much as digits as its factorization.

18474017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 18474017 is about 4298.1411098288. The cubic root of 18474017 is about 264.3547467378.

The spelling of 18474017 in words is "eighteen million, four hundred seventy-four thousand, seventeen".