2155773368 has 32 divisors (see below), whose sum is σ = 4642752000. Its totient is φ = 919255392.

The previous prime is 2155773343. The next prime is 2155773407. The reversal of 2155773368 is 8633775512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85580 + ... + 107867.

It is an arithmetic number, because the mean of its divisors is an integer number (145086000).

Almost surely, 2^2155773368 is an apocalyptic number.

2155773368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2155773368 is an abundant number, since it is smaller than the sum of its proper divisors (2486978632).

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

2155773368 is a wasteful number, since it uses less digits than its factorization.

2155773368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193659 (or 193655 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The square root of 2155773368 is about 46430.3065680165. The cubic root of 2155773368 is about 1291.8171150810.

The spelling of 2155773368 in words is "two billion, one hundred fifty-five million, seven hundred seventy-three thousand, three hundred sixty-eight".