18506037 has 16 divisors (see below), whose sum is σ = 27224640. Its totient is φ = 11088000.

The previous prime is 18506029. The next prime is 18506071. The reversal of 18506037 is 73060581.

It is not a de Polignac number, because 18506037 - 2³ = 18506029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18505995 and 18506013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18506027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (1701540).

Almost surely, 2^18506037 is an apocalyptic number.

It is an amenable number.

18506037 is a deficient number, since it is larger than the sum of its proper divisors (8718603).

18506037 is a wasteful number, since it uses less digits than its factorization.

18506037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 18506037 is about 4301.8643632732. The cubic root of 18506037 is about 264.5073891087.

It can be divided in two parts, 1850 and 6037, that added together give a palindrome (7887).

The spelling of 18506037 in words is "eighteen million, five hundred six thousand, thirty-seven".