90634648185 has 12 divisors (see below), whose sum is σ = 157100056932. Its totient is φ = 48338479008.

The previous prime is 90634648183. The next prime is 90634648189. The reversal of 90634648185 is 58184643609.

It can be written as a sum of positive squares in 2 ways, for example, as 14994247401 + 75640400784 = 122451^2 + 275028^2 .

It is not a de Polignac number, because 90634648185 - 2¹ = 90634648183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90634648183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1007051602 + ... + 1007051691.

It is an arithmetic number, because the mean of its divisors is an integer number (13091671411).

Almost surely, 2^90634648185 is an apocalyptic number.

It is an amenable number.

90634648185 is a deficient number, since it is larger than the sum of its proper divisors (66465408747).

90634648185 is a wasteful number, since it uses less digits than its factorization.

90634648185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014103304 (or 2014103301 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 90634648185 in words is "ninety billion, six hundred thirty-four million, six hundred forty-eight thousand, one hundred eighty-five".