3644140641 has 16 divisors (see below), whose sum is σ = 4884573504. Its totient is φ = 2416587264.

The previous prime is 3644140607. The next prime is 3644140649. The reversal of 3644140641 is 1460414463.

3644140641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3644140641 - 2¹⁰ = 3644139617 is a prime.

It is a super-2 number, since 2×3644140641² = 26559522022775781762, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3644140649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274085 + ... + 1276941.

It is an arithmetic number, because the mean of its divisors is an integer number (305285844).

Almost surely, 2^3644140641 is an apocalyptic number.

It is an amenable number.

3644140641 is a deficient number, since it is larger than the sum of its proper divisors (1240432863).

3644140641 is a wasteful number, since it uses less digits than its factorization.

3644140641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 3644140641 is about 60366.7179909592. The cubic root of 3644140641 is about 1538.8573973820.

The spelling of 3644140641 in words is "three billion, six hundred forty-four million, one hundred forty thousand, six hundred forty-one".