2390136887 has 2 divisors, whose sum is σ = 2390136888. Its totient is φ = 2390136886.

The previous prime is 2390136857. The next prime is 2390136907. The reversal of 2390136887 is 7886310932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2390136887 - 2²² = 2385942583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2390136857) 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 as a sum of consecutive naturals, namely, 1195068443 + 1195068444.

It is an arithmetic number, because the mean of its divisors is an integer number (1195068444).

Almost surely, 2^2390136887 is an apocalyptic number.

2390136887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2390136887 is an equidigital number, since it uses as much as digits as its factorization.

2390136887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 2390136887 is about 48889.0262431151. The cubic root of 2390136887 is about 1337.0293006044.

The spelling of 2390136887 in words is "two billion, three hundred ninety million, one hundred thirty-six thousand, eight hundred eighty-seven".