1995277256 has 96 divisors (see below), whose sum is σ = 4533278400. Its totient is φ = 819907200.

The previous prime is 1995277247. The next prime is 1995277279. The reversal of 1995277256 is 6527725991.

It is a super-2 number, since 2×1995277256² = 7962262656621779072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1995277198 and 1995277207.

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 23 ways as a sum of consecutive naturals, for example, 1897931 + ... + 1898981.

It is an arithmetic number, because the mean of its divisors is an integer number (47221650).

Almost surely, 2^1995277256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1995277256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2266639200).

1995277256 is an abundant number, since it is smaller than the sum of its proper divisors (2538001144).

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

1995277256 is a wasteful number, since it uses less digits than its factorization.

1995277256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1256 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 53.

The square root of 1995277256 is about 44668.5264587942. The cubic root of 1995277256 is about 1258.9285541708.

The spelling of 1995277256 in words is "one billion, nine hundred ninety-five million, two hundred seventy-seven thousand, two hundred fifty-six".