100018830 has 16 divisors (see below), whose sum is σ = 240045264. Its totient is φ = 26671680.

The previous prime is 100018829. The next prime is 100018843. The reversal of 100018830 is 38810001.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100018797 and 100018806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666951 + ... + 1667010.

It is an arithmetic number, because the mean of its divisors is an integer number (15002829).

Almost surely, 2^100018830 is an apocalyptic number.

100018830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100018830 is an abundant number, since it is smaller than the sum of its proper divisors (140026434).

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

100018830 is a wasteful number, since it uses less digits than its factorization.

100018830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333971.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 100018830 is about 10000.9414556831. The cubic root of 100018830 is about 464.1880152388.

Adding to 100018830 its reverse (38810001), we get a palindrome (138828831).

The spelling of 100018830 in words is "one hundred million, eighteen thousand, eight hundred thirty".