2345878391 has 2 divisors, whose sum is σ = 2345878392. Its totient is φ = 2345878390.

The previous prime is 2345878357. The next prime is 2345878441. The reversal of 2345878391 is 1938785432.

It is an a-pointer prime, because the next prime (2345878441) can be obtained adding 2345878391 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2345878391 - 2²² = 2341684087 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1172939195 + 1172939196.

It is an arithmetic number, because the mean of its divisors is an integer number (1172939196).

Almost surely, 2^2345878391 is an apocalyptic number.

2345878391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2345878391 is an equidigital number, since it uses as much as digits as its factorization.

2345878391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 2345878391 is about 48434.2687670620. The cubic root of 2345878391 is about 1328.7251792360.

The spelling of 2345878391 in words is "two billion, three hundred forty-five million, eight hundred seventy-eight thousand, three hundred ninety-one".