2261991246 has 8 divisors (see below), whose sum is σ = 4523982504. Its totient is φ = 753997080.

The previous prime is 2261991227. The next prime is 2261991247. The reversal of 2261991246 is 6421991622.

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

2261991246 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2261991198 and 2261991207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261991247) 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, 188499265 + ... + 188499276.

It is an arithmetic number, because the mean of its divisors is an integer number (565497813).

Almost surely, 2^2261991246 is an apocalyptic number.

2261991246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2261991246 is a wasteful number, since it uses less digits than its factorization.

2261991246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376998546.

The product of its digits is 93312, while the sum is 42.

The square root of 2261991246 is about 47560.3957721127. The cubic root of 2261991246 is about 1312.6944224275.

The spelling of 2261991246 in words is "two billion, two hundred sixty-one million, nine hundred ninety-one thousand, two hundred forty-six".