3821552649 has 32 divisors (see below), whose sum is σ = 5978972160. Its totient is φ = 2407539024.

The previous prime is 3821552617. The next prime is 3821552653. The reversal of 3821552649 is 9462551283.

3821552649 is a `hidden beast` number, since 3 + 82 + 1 + 5 + 526 + 49 = 666.

It is not a de Polignac number, because 3821552649 - 2⁵ = 3821552617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3821552699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14472 + ... + 88614.

It is an arithmetic number, because the mean of its divisors is an integer number (186842880).

Almost surely, 2^3821552649 is an apocalyptic number.

It is an amenable number.

3821552649 is a deficient number, since it is larger than the sum of its proper divisors (2157419511).

3821552649 is a wasteful number, since it uses less digits than its factorization.

3821552649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74258 (or 74252 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 3821552649 is about 61818.7079208228. The cubic root of 3821552649 is about 1563.4354282151.

The spelling of 3821552649 in words is "three billion, eight hundred twenty-one million, five hundred fifty-two thousand, six hundred forty-nine".