18012037 has 8 divisors (see below), whose sum is σ = 18335520. Its totient is φ = 17691600.

The previous prime is 18012017. The next prime is 18012041. The reversal of 18012037 is 73021081.

18012037 = T₄₃₈ + T₄₃₉ + ... + T₅₇₆.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18012037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18011999 and 18012017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18012017) 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, 13398 + ... + 14680.

It is an arithmetic number, because the mean of its divisors is an integer number (2291940).

Almost surely, 2^18012037 is an apocalyptic number.

It is an amenable number.

18012037 is a deficient number, since it is larger than the sum of its proper divisors (323483).

18012037 is a wasteful number, since it uses less digits than its factorization.

18012037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 18012037 is about 4244.0590240947. The cubic root of 18012037 is about 262.1325446708.

The spelling of 18012037 in words is "eighteen million, twelve thousand, thirty-seven".