18389037 has 8 divisors (see below), whose sum is σ = 25181536. Its totient is φ = 11927952.

The previous prime is 18389009. The next prime is 18389047. The reversal of 18389037 is 73098381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18389037 - 2¹² = 18384941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18388986 and 18389004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18389047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82723 + ... + 82944.

It is an arithmetic number, because the mean of its divisors is an integer number (3147692).

Almost surely, 2^18389037 is an apocalyptic number.

It is an amenable number.

18389037 is a deficient number, since it is larger than the sum of its proper divisors (6792499).

18389037 is a wasteful number, since it uses less digits than its factorization.

18389037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165707.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 18389037 is about 4288.2440462268. The cubic root of 18389037 is about 263.9487819602.

The spelling of 18389037 in words is "eighteen million, three hundred eighty-nine thousand, thirty-seven".