2390233891 has 2 divisors, whose sum is σ = 2390233892. Its totient is φ = 2390233890.

The previous prime is 2390233873. The next prime is 2390233919. The reversal of 2390233891 is 1983320932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2390233891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2390233871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195116945 + 1195116946.

It is an arithmetic number, because the mean of its divisors is an integer number (1195116946).

Almost surely, 2^2390233891 is an apocalyptic number.

2390233891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2390233891 is an equidigital number, since it uses as much as digits as its factorization.

2390233891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 2390233891 is about 48890.0183166257. The cubic root of 2390233891 is about 1337.0473881927.

The spelling of 2390233891 in words is "two billion, three hundred ninety million, two hundred thirty-three thousand, eight hundred ninety-one".