3649738 has 16 divisors (see below), whose sum is σ = 5733504. Its totient is φ = 1740640.

The previous prime is 3649699. The next prime is 3649741. The reversal of 3649738 is 8379463.

It is a self number, because there is not a number n which added to its sum of digits gives 3649738.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3381 + ... + 4327.

It is an arithmetic number, because the mean of its divisors is an integer number (358344).

Almost surely, 2^3649738 is an apocalyptic number.

3649738 is a deficient number, since it is larger than the sum of its proper divisors (2083766).

3649738 is a wasteful number, since it uses less digits than its factorization.

3649738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037.

The product of its digits is 108864, while the sum is 40.

The square root of 3649738 is about 1910.4287476899. The cubic root of 3649738 is about 153.9644883542.

It can be divided in two parts, 3649 and 738, that multiplied together give a palindrome (2692962).

The spelling of 3649738 in words is "three million, six hundred forty-nine thousand, seven hundred thirty-eight".