2281691859 has 4 divisors (see below), whose sum is σ = 3042255816. Its totient is φ = 1521127904.

The previous prime is 2281691849. The next prime is 2281691879. The reversal of 2281691859 is 9581961822.

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 2281691859 - 2⁵ = 2281691827 is a prime.

It is a super-2 number, since 2×2281691859² = 10412235478853751762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2281691849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380281974 + ... + 380281979.

It is an arithmetic number, because the mean of its divisors is an integer number (760563954).

Almost surely, 2^2281691859 is an apocalyptic number.

2281691859 is a deficient number, since it is larger than the sum of its proper divisors (760563957).

2281691859 is an equidigital number, since it uses as much as digits as its factorization.

2281691859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760563956.

The product of its digits is 622080, while the sum is 51.

The square root of 2281691859 is about 47767.0583038144. The cubic root of 2281691859 is about 1316.4943440414.

The spelling of 2281691859 in words is "two billion, two hundred eighty-one million, six hundred ninety-one thousand, eight hundred fifty-nine".