18038007 has 24 divisors (see below), whose sum is σ = 28272608. Its totient is φ = 11016000.

The previous prime is 18037961. The next prime is 18038021. The reversal of 18038007 is 70083081.

It is not a de Polignac number, because 18038007 - 2⁷ = 18037879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17157 + ... + 18177.

Almost surely, 2^18038007 is an apocalyptic number.

18038007 is a deficient number, since it is larger than the sum of its proper divisors (10234601).

18038007 is a wasteful number, since it uses less digits than its factorization.

18038007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18038007 is about 4247.1174930769. The cubic root of 18038007 is about 262.2584662615.

The spelling of 18038007 in words is "eighteen million, thirty-eight thousand, seven".