905163956 has 6 divisors (see below), whose sum is σ = 1584036930. Its totient is φ = 452581976.

The previous prime is 905163937. The next prime is 905163989. The reversal of 905163956 is 659361509.

It can be written as a sum of positive squares in only one way, i.e., 889828900 + 15335056 = 29830^2 + 3916^2 .

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, 113145491 + ... + 113145498.

It is an arithmetic number, because the mean of its divisors is an integer number (264006155).

Almost surely, 2^905163956 is an apocalyptic number.

It is an amenable number.

905163956 is a deficient number, since it is larger than the sum of its proper divisors (678872974).

905163956 is a wasteful number, since it uses less digits than its factorization.

905163956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226290993 (or 226290991 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 905163956 is about 30085.9428304981. The cubic root of 905163956 is about 967.3324362218.

The spelling of 905163956 in words is "nine hundred five million, one hundred sixty-three thousand, nine hundred fifty-six".