18634037 has 6 divisors (see below), whose sum is σ = 19299618. Its totient is φ = 17990672.

The previous prime is 18634013. The next prime is 18634073. The reversal of 18634037 is 73043681.

It can be written as a sum of positive squares in 3 ways, for example, as 6180196 + 12453841 = 2486^2 + 3529^2 .

It is not a de Polignac number, because 18634037 - 2¹⁴ = 18617653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18633994 and 18634012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18634337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10238 + ... + 11919.

It is an arithmetic number, because the mean of its divisors is an integer number (3216603).

Almost surely, 2^18634037 is an apocalyptic number.

It is an amenable number.

18634037 is a deficient number, since it is larger than the sum of its proper divisors (665581).

18634037 is an equidigital number, since it uses as much as digits as its factorization.

18634037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22215 (or 22186 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 18634037 is about 4316.7159971441. The cubic root of 18634037 is about 265.1158245319.

The spelling of 18634037 in words is "eighteen million, six hundred thirty-four thousand, thirty-seven".