3638158 has 12 divisors (see below), whose sum is σ = 5760720. Its totient is φ = 1722996.

The previous prime is 3638149. The next prime is 3638171. The reversal of 3638158 is 8518363.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1798 + ... + 3241.

It is an arithmetic number, because the mean of its divisors is an integer number (480060).

Almost surely, 2^3638158 is an apocalyptic number.

3638158 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3638158 is a deficient number, since it is larger than the sum of its proper divisors (2122562).

3638158 is a wasteful number, since it uses less digits than its factorization.

3638158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079 (or 5060 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 3638158 is about 1907.3956065798. The cubic root of 3638158 is about 153.8014814271.

The spelling of 3638158 in words is "three million, six hundred thirty-eight thousand, one hundred fifty-eight".