2155788850 has 24 divisors (see below), whose sum is σ = 4184107200. Its totient is φ = 824823120.

The previous prime is 2155788839. The next prime is 2155788881. The reversal of 2155788850 is 588875512.

It is a junction number, because it is equal to n+sod(n) for n = 2155788794 and 2155788803.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 936150 + ... + 938449.

It is an arithmetic number, because the mean of its divisors is an integer number (174337800).

Almost surely, 2^2155788850 is an apocalyptic number.

2155788850 is a deficient number, since it is larger than the sum of its proper divisors (2028318350).

2155788850 is a wasteful number, since it uses less digits than its factorization.

2155788850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874634 (or 1874629 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 49.

The square root of 2155788850 is about 46430.4732907172. The cubic root of 2155788850 is about 1291.8202075311.

The spelling of 2155788850 in words is "two billion, one hundred fifty-five million, seven hundred eighty-eight thousand, eight hundred fifty".