18342837 has 12 divisors (see below), whose sum is σ = 26593164. Its totient is φ = 12183360.

The previous prime is 18342817. The next prime is 18342851. The reversal of 18342837 is 73824381.

It can be written as a sum of positive squares in 2 ways, for example, as 12895281 + 5447556 = 3591^2 + 2334^2 .

It is not a de Polignac number, because 18342837 - 2¹² = 18338741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098 + ... + 6155.

It is an arithmetic number, because the mean of its divisors is an integer number (2216097).

Almost surely, 2^18342837 is an apocalyptic number.

It is an amenable number.

18342837 is a deficient number, since it is larger than the sum of its proper divisors (8250327).

18342837 is a wasteful number, since it uses less digits than its factorization.

18342837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540 (or 7537 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 18342837 is about 4282.8538382719. The cubic root of 18342837 is about 263.7275512291.

The spelling of 18342837 in words is "eighteen million, three hundred forty-two thousand, eight hundred thirty-seven".