100101800 has 24 divisors (see below), whose sum is σ = 232737150. Its totient is φ = 40040640.

The previous prime is 100101767. The next prime is 100101803. The reversal of 100101800 is 8101001.

It can be written as a sum of positive squares in 3 ways, for example, as 59320804 + 40780996 = 7702^2 + 6386^2 .

It is not an unprimeable number, because it can be changed into a prime (100101803) by changing a digit.

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, 250055 + ... + 250454.

Almost surely, 2^100101800 is an apocalyptic number.

100101800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100101800 is an abundant number, since it is smaller than the sum of its proper divisors (132635350).

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

100101800 is a wasteful number, since it uses less digits than its factorization.

100101800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500525 (or 500516 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 100101800 is about 10005.0887052539. The cubic root of 100101800 is about 464.3163345260.

Adding to 100101800 its reverse (8101001), we get a palindrome (108202801).

The spelling of 100101800 in words is "one hundred million, one hundred one thousand, eight hundred".