2112939956 has 6 divisors (see below), whose sum is σ = 3697644930. Its totient is φ = 1056469976.

The previous prime is 2112939947. The next prime is 2112940001. The reversal of 2112939956 is 6599392112.

It can be written as a sum of positive squares in only one way, i.e., 1839037456 + 273902500 = 42884^2 + 16550^2 .

It is a super-2 number, since 2×2112939956² = 8929030515322563872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112939956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264117491 + ... + 264117498.

It is an arithmetic number, because the mean of its divisors is an integer number (616274155).

Almost surely, 2^2112939956 is an apocalyptic number.

It is an amenable number.

2112939956 is a deficient number, since it is larger than the sum of its proper divisors (1584704974).

2112939956 is a wasteful number, since it uses less digits than its factorization.

2112939956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528234993 (or 528234991 counting only the distinct ones).

The product of its digits is 262440, while the sum is 47.

The square root of 2112939956 is about 45966.7266182834. The cubic root of 2112939956 is about 1283.2040409616.

The spelling of 2112939956 in words is "two billion, one hundred twelve million, nine hundred thirty-nine thousand, nine hundred fifty-six".