2113778852 has 12 divisors (see below), whose sum is σ = 3707354700. Its totient is φ = 1054534656.

The previous prime is 2113778837. The next prime is 2113778879. The reversal of 2113778852 is 2588773112.

It can be written as a sum of positive squares in 2 ways, for example, as 1183772836 + 930006016 = 34406^2 + 30496^2 .

It is a super-3 number, since 3×2113778852³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586673 + ... + 590264.

It is an arithmetic number, because the mean of its divisors is an integer number (308946225).

Almost surely, 2^2113778852 is an apocalyptic number.

It is an amenable number.

2113778852 is a deficient number, since it is larger than the sum of its proper divisors (1593575848).

2113778852 is a wasteful number, since it uses less digits than its factorization.

2113778852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177390 (or 1177388 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 2113778852 is about 45975.8507479742. The cubic root of 2113778852 is about 1283.3738410707.

The spelling of 2113778852 in words is "two billion, one hundred thirteen million, seven hundred seventy-eight thousand, eight hundred fifty-two".