2261881622 has 64 divisors (see below), whose sum is σ = 4712601600. Its totient is φ = 785393280.

The previous prime is 2261881607. The next prime is 2261881631.

2261881622 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2261881622² = 10232216943882701768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38579 + ... + 77537.

It is an arithmetic number, because the mean of its divisors is an integer number (73634400).

Almost surely, 2^2261881622 is an apocalyptic number.

2261881622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2261881622 is an abundant number, since it is smaller than the sum of its proper divisors (2450719978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2261881622 is a wasteful number, since it uses less digits than its factorization.

2261881622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39021.

The product of its digits is 36864, while the sum is 38.

The square root of 2261881622 is about 47559.2432866630. The cubic root of 2261881622 is about 1312.6732161654.

The spelling of 2261881622 in words is "two billion, two hundred sixty-one million, eight hundred eighty-one thousand, six hundred twenty-two".