3644331836 has 12 divisors (see below), whose sum is σ = 6378129912. Its totient is φ = 1822009008.

The previous prime is 3644331811. The next prime is 3644331839. The reversal of 3644331836 is 6381334463.

3644331836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3644331793 and 3644331802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644331839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24551 + ... + 88833.

It is an arithmetic number, because the mean of its divisors is an integer number (531510826).

Almost surely, 2^3644331836 is an apocalyptic number.

It is an amenable number.

3644331836 is a deficient number, since it is larger than the sum of its proper divisors (2733798076).

3644331836 is a wasteful number, since it uses less digits than its factorization.

3644331836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78460 (or 78458 counting only the distinct ones).

The product of its digits is 373248, while the sum is 41.

The square root of 3644331836 is about 60368.3015828671. The cubic root of 3644331836 is about 1538.8843096890.

The spelling of 3644331836 in words is "three billion, six hundred forty-four million, three hundred thirty-one thousand, eight hundred thirty-six".