2261991622 has 8 divisors (see below), whose sum is σ = 3701440872. Its totient is φ = 1028178000.

The previous prime is 2261991617. The next prime is 2261991631.

2261991622 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51408879 + ... + 51408922.

It is an arithmetic number, because the mean of its divisors is an integer number (462680109).

Almost surely, 2^2261991622 is an apocalyptic number.

2261991622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2261991622 is a deficient number, since it is larger than the sum of its proper divisors (1439449250).

2261991622 is a wasteful number, since it uses less digits than its factorization.

2261991622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102817814.

The product of its digits is 46656, while the sum is 40.

The square root of 2261991622 is about 47560.3997249813. The cubic root of 2261991622 is about 1312.6944951618.

The spelling of 2261991622 in words is "two billion, two hundred sixty-one million, nine hundred ninety-one thousand, six hundred twenty-two".