90788938118 has 4 divisors (see below), whose sum is σ = 136183407180. Its totient is φ = 45394469058.

The previous prime is 90788938111. The next prime is 90788938127. The reversal of 90788938118 is 81183988709.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90788938111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22697234528 + ... + 22697234531.

It is an arithmetic number, because the mean of its divisors is an integer number (34045851795).

Almost surely, 2^90788938118 is an apocalyptic number.

90788938118 is a deficient number, since it is larger than the sum of its proper divisors (45394469062).

90788938118 is a wasteful number, since it uses less digits than its factorization.

90788938118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45394469061.

The product of its (nonzero) digits is 6967296, while the sum is 62.

The spelling of 90788938118 in words is "ninety billion, seven hundred eighty-eight million, nine hundred thirty-eight thousand, one hundred eighteen".