90081163 has 8 divisors (see below), whose sum is σ = 93350880. Its totient is φ = 86822400.

The previous prime is 90081161. The next prime is 90081203. The reversal of 90081163 is 36118009.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90081163 - 2¹ = 90081161 is a prime.

It is a super-2 number, since 2×90081163² = 16229231854865138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90081161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16363 + ... + 21163.

It is an arithmetic number, because the mean of its divisors is an integer number (11668860).

Almost surely, 2^90081163 is an apocalyptic number.

90081163 is a deficient number, since it is larger than the sum of its proper divisors (3269717).

90081163 is a wasteful number, since it uses less digits than its factorization.

90081163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 90081163 is about 9491.1096822237. The cubic root of 90081163 is about 448.2751468673.

The spelling of 90081163 in words is "ninety million, eighty-one thousand, one hundred sixty-three".