3644362736 has 40 divisors (see below), whose sum is σ = 8266491744. Its totient is φ = 1523773440.

The previous prime is 3644362651. The next prime is 3644362739. The reversal of 3644362736 is 6372634463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644362739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392225 + ... + 401408.

Almost surely, 2^3644362736 is an apocalyptic number.

It is an amenable number.

3644362736 is an abundant number, since it is smaller than the sum of its proper divisors (4622129008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644362736 is a wasteful number, since it uses less digits than its factorization.

3644362736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793689 (or 793683 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 44.

The square root of 3644362736 is about 60368.5575113403. The cubic root of 3644362736 is about 1538.8886590359. Note that the first 3 decimals are identical.

The spelling of 3644362736 in words is "three billion, six hundred forty-four million, three hundred sixty-two thousand, seven hundred thirty-six".