90233353638 has 12 divisors (see below), whose sum is σ = 195505599588. Its totient is φ = 30077784540.

The previous prime is 90233353621. The next prime is 90233353643. The reversal of 90233353638 is 83635333209.

90233353638 is a `hidden beast` number, since 9 + 0 + 2 + 3 + 3 + 3 + 5 + 3 + 638 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90233353593 and 90233353602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2506482028 + ... + 2506482063.

It is an arithmetic number, because the mean of its divisors is an integer number (16292133299).

Almost surely, 2^90233353638 is an apocalyptic number.

90233353638 is an abundant number, since it is smaller than the sum of its proper divisors (105272245950).

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

90233353638 is a wasteful number, since it uses less digits than its factorization.

90233353638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012964099 (or 5012964096 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 45.

The spelling of 90233353638 in words is "ninety billion, two hundred thirty-three million, three hundred fifty-three thousand, six hundred thirty-eight".