3651538 has 24 divisors (see below), whose sum is σ = 6128640. Its totient is φ = 1630200.

The previous prime is 3651497. The next prime is 3651539. The reversal of 3651538 is 8351563.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651539) 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, 19023 + ... + 19213.

It is an arithmetic number, because the mean of its divisors is an integer number (255360).

Almost surely, 2^3651538 is an apocalyptic number.

3651538 is a deficient number, since it is larger than the sum of its proper divisors (2477102).

3651538 is a wasteful number, since it uses less digits than its factorization.

3651538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 283 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 3651538 is about 1910.8997880580. The cubic root of 3651538 is about 153.9897952422.

The spelling of 3651538 in words is "three million, six hundred fifty-one thousand, five hundred thirty-eight".