2391520195 has 4 divisors (see below), whose sum is σ = 2869824240. Its totient is φ = 1913216152.

The previous prime is 2391520181. The next prime is 2391520213. The reversal of 2391520195 is 5910251932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2391520195 - 2¹⁷ = 2391389123 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 239152015 + ... + 239152024.

It is an arithmetic number, because the mean of its divisors is an integer number (717456060).

Almost surely, 2^2391520195 is an apocalyptic number.

2391520195 is a deficient number, since it is larger than the sum of its proper divisors (478304045).

2391520195 is an equidigital number, since it uses as much as digits as its factorization.

2391520195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478304044.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 2391520195 is about 48903.1716251615. The cubic root of 2391520195 is about 1337.2871891302.

The spelling of 2391520195 in words is "two billion, three hundred ninety-one million, five hundred twenty thousand, one hundred ninety-five".