2168831236 has 96 divisors (see below), whose sum is σ = 4884727680. Its totient is φ = 826828800.

The previous prime is 2168831227. The next prime is 2168831239. The reversal of 2168831236 is 6321388612.

It is a super-3 number, since 3×2168831236³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2168831239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278151 + ... + 285841.

It is an arithmetic number, because the mean of its divisors is an integer number (50882580).

Almost surely, 2^2168831236 is an apocalyptic number.

2168831236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2168831236 is an abundant number, since it is smaller than the sum of its proper divisors (2715896444).

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

2168831236 is a wasteful number, since it uses less digits than its factorization.

2168831236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7765 (or 7763 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 2168831236 is about 46570.7122127201. The cubic root of 2168831236 is about 1294.4201149454.

The spelling of 2168831236 in words is "two billion, one hundred sixty-eight million, eight hundred thirty-one thousand, two hundred thirty-six".