3664181890 has 16 divisors (see below), whose sum is σ = 6756394680. Its totient is φ = 1429924480.

The previous prime is 3664181881. The next prime is 3664181933. The reversal of 3664181890 is 981814663.

It can be written as a sum of positive squares in 4 ways, for example, as 970883281 + 2693298609 = 31159^2 + 51897^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3664181890.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4468105 + ... + 4468924.

Almost surely, 2^3664181890 is an apocalyptic number.

3664181890 is a deficient number, since it is larger than the sum of its proper divisors (3092212790).

3664181890 is a wasteful number, since it uses less digits than its factorization.

3664181890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8937077.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 3664181890 is about 60532.4862367308. The cubic root of 3664181890 is about 1541.6732656093.

The spelling of 3664181890 in words is "three billion, six hundred sixty-four million, one hundred eighty-one thousand, eight hundred ninety".