3644650460 has 48 divisors (see below), whose sum is σ = 8355940992. Its totient is φ = 1324315200.

The previous prime is 3644650453. The next prime is 3644650463. The reversal of 3644650460 is 640564463.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644650463) 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, 320675 + ... + 331845.

It is an arithmetic number, because the mean of its divisors is an integer number (174082104).

Almost surely, 2^3644650460 is an apocalyptic number.

It is an amenable number.

3644650460 is an abundant number, since it is smaller than the sum of its proper divisors (4711290532).

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

3644650460 is a wasteful number, since it uses less digits than its factorization.

3644650460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674 (or 12672 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 3644650460 is about 60370.9405260511. The cubic root of 3644650460 is about 1538.9291566099.

The spelling of 3644650460 in words is "three billion, six hundred forty-four million, six hundred fifty thousand, four hundred sixty".