2290540391 has 4 divisors (see below), whose sum is σ = 2291021112. Its totient is φ = 2290059672.

The previous prime is 2290540387. The next prime is 2290540393. The reversal of 2290540391 is 1930450922.

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 2290540391 - 2² = 2290540387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290540393) 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 in 3 ways as a sum of consecutive naturals, for example, 233141 + ... + 242766.

It is an arithmetic number, because the mean of its divisors is an integer number (572755278).

Almost surely, 2^2290540391 is an apocalyptic number.

2290540391 is a deficient number, since it is larger than the sum of its proper divisors (480721).

2290540391 is an equidigital number, since it uses as much as digits as its factorization.

2290540391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480720.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2290540391 is about 47859.5903764334. The cubic root of 2290540391 is about 1318.1939624033.

The spelling of 2290540391 in words is "two billion, two hundred ninety million, five hundred forty thousand, three hundred ninety-one".