18042837 has 16 divisors (see below), whose sum is σ = 26142720. Its totient is φ = 11026800.

The previous prime is 18042809. The next prime is 18042841. The reversal of 18042837 is 73824081.

It is not a de Polignac number, because 18042837 - 2⁸ = 18042581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18042798 and 18042807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18042887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3339 + ... + 6872.

It is an arithmetic number, because the mean of its divisors is an integer number (1633920).

Almost surely, 2^18042837 is an apocalyptic number.

It is an amenable number.

18042837 is a deficient number, since it is larger than the sum of its proper divisors (8099883).

18042837 is a wasteful number, since it uses less digits than its factorization.

18042837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10264.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 18042837 is about 4247.6860759712. The cubic root of 18042837 is about 262.2818723090.

The spelling of 18042837 in words is "eighteen million, forty-two thousand, eight hundred thirty-seven".