2251830391 has 8 divisors (see below), whose sum is σ = 2403734400. Its totient is φ = 2103265080.

The previous prime is 2251830389. The next prime is 2251830409. The reversal of 2251830391 is 1930381522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2251830391 - 2¹ = 2251830389 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 (2251830491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833281 + ... + 835978.

It is an arithmetic number, because the mean of its divisors is an integer number (300466800).

Almost surely, 2^2251830391 is an apocalyptic number.

2251830391 is a deficient number, since it is larger than the sum of its proper divisors (151904009).

2251830391 is a wasteful number, since it uses less digits than its factorization.

2251830391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669349.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2251830391 is about 47453.4549953952. The cubic root of 2251830391 is about 1310.7259327530.

The spelling of 2251830391 in words is "two billion, two hundred fifty-one million, eight hundred thirty thousand, three hundred ninety-one".