3649131 has 12 divisors (see below), whose sum is σ = 5466552. Its totient is φ = 2432592.

The previous prime is 3649097. The next prime is 3649133. The reversal of 3649131 is 1319463.

3649131 is a `hidden beast` number, since 3 + 649 + 13 + 1 = 666.

It is not a de Polignac number, because 3649131 - 2⁷ = 3649003 is a prime.

It is a super-2 number, since 2×3649131² = 26632314110322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

3649131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3649095 and 3649104.

It is not an unprimeable number, because it can be changed into a prime (3649133) 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, 7266 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (455546).

Almost surely, 2^3649131 is an apocalyptic number.

3649131 is a deficient number, since it is larger than the sum of its proper divisors (1817421).

3649131 is an equidigital number, since it uses as much as digits as its factorization.

3649131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15032 (or 15020 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 3649131 is about 1910.2698762217. The cubic root of 3649131 is about 153.9559524332.

The spelling of 3649131 in words is "three million, six hundred forty-nine thousand, one hundred thirty-one".