3644899416 has 96 divisors (see below), whose sum is σ = 10493861040. Its totient is φ = 1138950144.

The previous prime is 3644899367. The next prime is 3644899421. The reversal of 3644899416 is 6149984463.

It is a happy number.

3644899416 is a `hidden beast` number, since 3 + 64 + 489 + 94 + 16 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 308775 + ... + 320361.

Almost surely, 2^3644899416 is an apocalyptic number.

3644899416 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644899416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5246930520).

3644899416 is an abundant number, since it is smaller than the sum of its proper divisors (6848961624).

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

3644899416 is a wasteful number, since it uses less digits than its factorization.

3644899416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11873 (or 11866 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 3644899416 is about 60373.0023768903. The cubic root of 3644899416 is about 1538.9641958113.

The spelling of 3644899416 in words is "three billion, six hundred forty-four million, eight hundred ninety-nine thousand, four hundred sixteen".