2261323636 has 48 divisors (see below), whose sum is σ = 4654278720. Its totient is φ = 947761920.

The previous prime is 2261323567. The next prime is 2261323651. The reversal of 2261323636 is 6363231622.

It is a super-2 number, since 2×2261323636² = 10227169173464520992, 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 15 ways as a sum of consecutive naturals, for example, 735775 + ... + 738841.

It is an arithmetic number, because the mean of its divisors is an integer number (96964140).

Almost surely, 2^2261323636 is an apocalyptic number.

2261323636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2261323636 is an abundant number, since it is smaller than the sum of its proper divisors (2392955084).

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

2261323636 is a wasteful number, since it uses less digits than its factorization.

2261323636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4382 counting only the distinct ones).

The product of its digits is 46656, while the sum is 34.

The square root of 2261323636 is about 47553.3767044991. The cubic root of 2261323636 is about 1312.5652657009.

The spelling of 2261323636 in words is "two billion, two hundred sixty-one million, three hundred twenty-three thousand, six hundred thirty-six".