3639899993 has 2 divisors, whose sum is σ = 3639899994. Its totient is φ = 3639899992.

The previous prime is 3639899953. The next prime is 3639900059. The reversal of 3639899993 is 3999989363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3550729744 + 89170249 = 59588^2 + 9443^2 .

It is a cyclic number.

It is not a de Polignac number, because 3639899993 - 2⁶ = 3639899929 is a prime.

It is not a weakly prime, because it can be changed into another prime (3639899933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819949996 + 1819949997.

It is an arithmetic number, because the mean of its divisors is an integer number (1819949997).

Almost surely, 2^3639899993 is an apocalyptic number.

It is an amenable number.

3639899993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3639899993 is an equidigital number, since it uses as much as digits as its factorization.

3639899993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76527504, while the sum is 68.

The square root of 3639899993 is about 60331.5837103585. The cubic root of 3639899993 is about 1538.2602483198.

The spelling of 3639899993 in words is "three billion, six hundred thirty-nine million, eight hundred ninety-nine thousand, nine hundred ninety-three".