805938156 has 18 divisors (see below), whose sum is σ = 2037232652. Its totient is φ = 268646040.

The previous prime is 805938149. The next prime is 805938167. The reversal of 805938156 is 651839508.

805938156 is a `hidden beast` number, since 8 + 0 + 593 + 8 + 1 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×805938156² = 1299072622593360672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11193550 + ... + 11193621.

Almost surely, 2^805938156 is an apocalyptic number.

It is an amenable number.

805938156 is an abundant number, since it is smaller than the sum of its proper divisors (1231294496).

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

805938156 is a wasteful number, since it uses less digits than its factorization.

805938156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22387181 (or 22387176 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 805938156 is about 28389.0499312675. The cubic root of 805938156 is about 930.6089802610.

It can be divided in two parts, 805 and 938156, that added together give a square (938961 = 969²).

The spelling of 805938156 in words is "eight hundred five million, nine hundred thirty-eight thousand, one hundred fifty-six".