2291857859 has 2 divisors, whose sum is σ = 2291857860. Its totient is φ = 2291857858.

The previous prime is 2291857847. The next prime is 2291857889. The reversal of 2291857859 is 9587581922.

2291857859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2291857859 - 2¹² = 2291853763 is a prime.

It is a super-2 number, since 2×2291857859² = 10505224891720127762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2291857819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145928929 + 1145928930.

It is an arithmetic number, because the mean of its divisors is an integer number (1145928930).

Almost surely, 2^2291857859 is an apocalyptic number.

2291857859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291857859 is an equidigital number, since it uses as much as digits as its factorization.

2291857859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 56.

The square root of 2291857859 is about 47873.3522849612. The cubic root of 2291857859 is about 1318.4466459345.

The spelling of 2291857859 in words is "two billion, two hundred ninety-one million, eight hundred fifty-seven thousand, eight hundred fifty-nine".