2291986368 has 280 divisors, whose sum is σ = 7929372000. Its totient is φ = 654345216.

The previous prime is 2291986337. The next prime is 2291986373. The reversal of 2291986368 is 8636891922.

It is a super-2 number, since 2×2291986368² = 10506403022195662848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1777468 + ... + 1778756.

Almost surely, 2^2291986368 is an apocalyptic number.

2291986368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291986368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3964686000).

2291986368 is an abundant number, since it is smaller than the sum of its proper divisors (5637385632).

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

2291986368 is an equidigital number, since it uses as much as digits as its factorization.

2291986368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1301 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 2291986368 is about 47874.6944428891. The cubic root of 2291986368 is about 1318.4712881104.

The spelling of 2291986368 in words is "two billion, two hundred ninety-one million, nine hundred eighty-six thousand, three hundred sixty-eight".