3651044657 has 16 divisors (see below), whose sum is σ = 4000005072. Its totient is φ = 3312307200.

The previous prime is 3651044611. The next prime is 3651044659. The reversal of 3651044657 is 7564401563.

3651044657 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 8 ways, for example, as 61716736 + 3589327921 = 7856^2 + 59911^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651044657 - 2²⁸ = 3382609201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651044659) 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, 169733 + ... + 190029.

It is an arithmetic number, because the mean of its divisors is an integer number (250000317).

Almost surely, 2^3651044657 is an apocalyptic number.

It is an amenable number.

3651044657 is a deficient number, since it is larger than the sum of its proper divisors (348960415).

3651044657 is a wasteful number, since it uses less digits than its factorization.

3651044657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20548.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 3651044657 is about 60423.8748922973. The cubic root of 3651044657 is about 1539.8285997187.

The spelling of 3651044657 in words is "three billion, six hundred fifty-one million, forty-four thousand, six hundred fifty-seven".