18258007 has 2 divisors, whose sum is σ = 18258008. Its totient is φ = 18258006.

The previous prime is 18257999. The next prime is 18258029. The reversal of 18258007 is 70085281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18258007 - 2³ = 18257999 is a prime.

It is a super-2 number, since 2×18258007² = 666709639224098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18258007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18258047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9129003 + 9129004.

It is an arithmetic number, because the mean of its divisors is an integer number (9129004).

Almost surely, 2^18258007 is an apocalyptic number.

18258007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18258007 is an equidigital number, since it uses as much as digits as its factorization.

18258007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 18258007 is about 4272.9389183558. The cubic root of 18258007 is about 263.3203698509.

The spelling of 18258007 in words is "eighteen million, two hundred fifty-eight thousand, seven".