18369081 has 12 divisors (see below), whose sum is σ = 27389440. Its totient is φ = 11850840.

The previous prime is 18369079. The next prime is 18369083. The reversal of 18369081 is 18096381.

It is an interprime number because it is at equal distance from previous prime (18369079) and next prime (18369083).

It is not a de Polignac number, because 18369081 - 2¹ = 18369079 is a prime.

It is a super-2 number, since 2×18369081² = 674846273569122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18369083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32641 + ... + 33198.

Almost surely, 2^18369081 is an apocalyptic number.

It is an amenable number.

18369081 is a deficient number, since it is larger than the sum of its proper divisors (9020359).

18369081 is a wasteful number, since it uses less digits than its factorization.

18369081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65876 (or 65873 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 18369081 is about 4285.9165880824. The cubic root of 18369081 is about 263.8532672894.

The spelling of 18369081 in words is "eighteen million, three hundred sixty-nine thousand, eighty-one".