900165853 has 2 divisors, whose sum is σ = 900165854. Its totient is φ = 900165852.

The previous prime is 900165841. The next prime is 900165923. The reversal of 900165853 is 358561009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655462404 + 244703449 = 25602^2 + 15643^2 .

It is a cyclic number.

It is not a de Polignac number, because 900165853 - 2²¹ = 898068701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900162853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450082926 + 450082927.

It is an arithmetic number, because the mean of its divisors is an integer number (450082927).

Almost surely, 2^900165853 is an apocalyptic number.

It is an amenable number.

900165853 is a deficient number, since it is larger than the sum of its proper divisors (1).

900165853 is an equidigital number, since it uses as much as digits as its factorization.

900165853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 900165853 is about 30002.7640893302. The cubic root of 900165853 is about 965.5486881151.

It can be divided in two parts, 900 and 165853, that added together give a triangular number (166753 = T₅₇₇).

The spelling of 900165853 in words is "nine hundred million, one hundred sixty-five thousand, eight hundred fifty-three".