3664013949 has 6 divisors (see below), whose sum is σ = 5292464606. Its totient is φ = 2442675960.

The previous prime is 3664013923. The next prime is 3664013999. The reversal of 3664013949 is 9493104663.

It can be written as a sum of positive squares in only one way, i.e., 3531924900 + 132089049 = 59430^2 + 11493^2 .

It is not a de Polignac number, because 3664013949 - 2²⁵ = 3630459517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664013999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203556322 + ... + 203556339.

Almost surely, 2^3664013949 is an apocalyptic number.

It is an amenable number.

3664013949 is a deficient number, since it is larger than the sum of its proper divisors (1628450657).

3664013949 is a wasteful number, since it uses less digits than its factorization.

3664013949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407112667 (or 407112664 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 3664013949 is about 60531.0990235598. The cubic root of 3664013949 is about 1541.6497120018.

The spelling of 3664013949 in words is "three billion, six hundred sixty-four million, thirteen thousand, nine hundred forty-nine".