3664181889 has 6 divisors (see below), whose sum is σ = 5292707186. Its totient is φ = 2442787920.

The previous prime is 3664181881. The next prime is 3664181933. The reversal of 3664181889 is 9881814663.

It can be written as a sum of positive squares in only one way, i.e., 1908990864 + 1755191025 = 43692^2 + 41895^2 .

It is not a de Polignac number, because 3664181889 - 2³ = 3664181881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3664181881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203565652 + ... + 203565669.

Almost surely, 2^3664181889 is an apocalyptic number.

It is an amenable number.

3664181889 is a deficient number, since it is larger than the sum of its proper divisors (1628525297).

3664181889 is a wasteful number, since it uses less digits than its factorization.

3664181889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407131327 (or 407131324 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 3664181889 is about 60532.4862284707. The cubic root of 3664181889 is about 1541.6732654690.

The spelling of 3664181889 in words is "three billion, six hundred sixty-four million, one hundred eighty-one thousand, eight hundred eighty-nine".