100182805 has 4 divisors (see below), whose sum is σ = 120219372. Its totient is φ = 80146240.

The previous prime is 100182787. The next prime is 100182811. The reversal of 100182805 is 508281001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72029169 + 28153636 = 8487^2 + 5306^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100182805 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100182805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10018276 + ... + 10018285.

It is an arithmetic number, because the mean of its divisors is an integer number (30054843).

Almost surely, 2^100182805 is an apocalyptic number.

It is an amenable number.

100182805 is a deficient number, since it is larger than the sum of its proper divisors (20036567).

100182805 is an equidigital number, since it uses as much as digits as its factorization.

100182805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20036566.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 100182805 is about 10009.1360766052. The cubic root of 100182805 is about 464.4415464060.

The spelling of 100182805 in words is "one hundred million, one hundred eighty-two thousand, eight hundred five".