3663996989 has 2 divisors, whose sum is σ = 3663996990. Its totient is φ = 3663996988.

The previous prime is 3663996949. The next prime is 3663997009. The reversal of 3663996989 is 9896993663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3370731364 + 293265625 = 58058^2 + 17125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663996989 is a prime.

It is a super-2 number, since 2×3663996989² = 26849747870802132242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3663996949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1831998494 + 1831998495.

It is an arithmetic number, because the mean of its divisors is an integer number (1831998495).

Almost surely, 2^3663996989 is an apocalyptic number.

It is an amenable number.

3663996989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3663996989 is an equidigital number, since it uses as much as digits as its factorization.

3663996989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102036672, while the sum is 68.

The square root of 3663996989 is about 60530.9589301210. The cubic root of 3663996989 is about 1541.6473333337.

The spelling of 3663996989 in words is "three billion, six hundred sixty-three million, nine hundred ninety-six thousand, nine hundred eighty-nine".