90918182 has 8 divisors (see below), whose sum is σ = 138613152. Its totient is φ = 44713800.

The previous prime is 90918181. The next prime is 90918187. The reversal of 90918182 is 28181909.

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

It is a super-2 number, since 2×90918182² = 16532231636370248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90918181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372494 + ... + 372737.

It is an arithmetic number, because the mean of its divisors is an integer number (17326644).

Almost surely, 2^90918182 is an apocalyptic number.

90918182 is a deficient number, since it is larger than the sum of its proper divisors (47694970).

90918182 is a wasteful number, since it uses less digits than its factorization.

90918182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745294.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 90918182 is about 9535.1026213670. The cubic root of 90918182 is about 449.6593009665.

It can be divided in two parts, 909 and 18182, that added together give a palindrome (19091).

The spelling of 90918182 in words is "ninety million, nine hundred eighteen thousand, one hundred eighty-two".