18369036 has 36 divisors (see below), whose sum is σ = 53066832. Its totient is φ = 5248224.

The previous prime is 18369023. The next prime is 18369037. The reversal of 18369036 is 63096381.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18369037) 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, 36195 + ... + 36698.

Almost surely, 2^18369036 is an apocalyptic number.

It is an amenable number.

18369036 is an abundant number, since it is smaller than the sum of its proper divisors (34697796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18369036 is a wasteful number, since it uses less digits than its factorization.

18369036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72910 (or 72905 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 18369036 is about 4285.9113383270. The cubic root of 18369036 is about 263.8530518294.

The spelling of 18369036 in words is "eighteen million, three hundred sixty-nine thousand, thirty-six".