3646921984 has 18 divisors (see below), whose sum is σ = 7279598690. Its totient is φ = 1823460864.

The previous prime is 3646921979. The next prime is 3646921987. The reversal of 3646921984 is 4891296463.

3646921984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3038214400 + 608707584 = 55120^2 + 24672^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646921987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7122639 + ... + 7123150.

Almost surely, 2^3646921984 is an apocalyptic number.

It is an amenable number.

3646921984 is a deficient number, since it is larger than the sum of its proper divisors (3632676706).

3646921984 is an equidigital number, since it uses as much as digits as its factorization.

3646921984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14245805 (or 14245791 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 3646921984 is about 60389.7506535670. The cubic root of 3646921984 is about 1539.2488021260.

The spelling of 3646921984 in words is "three billion, six hundred forty-six million, nine hundred twenty-one thousand, nine hundred eighty-four".