3618999 has 24 divisors (see below), whose sum is σ = 5542992. Its totient is φ = 2358720.

The previous prime is 3618991. The next prime is 3619013. The reversal of 3618999 is 9998163.

It is not a de Polignac number, because 3618999 - 2³ = 3618991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3618991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12739 + ... + 13019.

It is an arithmetic number, because the mean of its divisors is an integer number (230958).

Almost surely, 2^3618999 is an apocalyptic number.

3618999 is a deficient number, since it is larger than the sum of its proper divisors (1923993).

3618999 is an equidigital number, since it uses as much as digits as its factorization.

3618999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 337 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 3618999 is about 1902.3666838967. The cubic root of 3618999 is about 153.5310267718.

The spelling of 3618999 in words is "three million, six hundred eighteen thousand, nine hundred ninety-nine".