3644025993 has 12 divisors (see below), whose sum is σ = 5405852868. Its totient is φ = 2363692320.

The previous prime is 3644025989. The next prime is 3644026019. The reversal of 3644025993 is 3995204463.

3644025993 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2508807744 + 1135218249 = 50088^2 + 33693^2 .

It is not a de Polignac number, because 3644025993 - 2² = 3644025989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3644025793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5471178 + ... + 5471843.

It is an arithmetic number, because the mean of its divisors is an integer number (450487739).

Almost surely, 2^3644025993 is an apocalyptic number.

It is an amenable number.

3644025993 is a deficient number, since it is larger than the sum of its proper divisors (1761826875).

3644025993 is a wasteful number, since it uses less digits than its factorization.

3644025993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943064 (or 10943061 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 3644025993 is about 60365.7683873899. The cubic root of 3644025993 is about 1538.8412592587.

The spelling of 3644025993 in words is "three billion, six hundred forty-four million, twenty-five thousand, nine hundred ninety-three".