18100830 has 32 divisors (see below), whose sum is σ = 47392128. Its totient is φ = 4388000.

The previous prime is 18100783. The next prime is 18100837. The reversal of 18100830 is 3800181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18100797 and 18100806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18100837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27096 + ... + 27755.

It is an arithmetic number, because the mean of its divisors is an integer number (1481004).

Almost surely, 2^18100830 is an apocalyptic number.

18100830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18100830 is an abundant number, since it is smaller than the sum of its proper divisors (29291298).

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

18100830 is a wasteful number, since it uses less digits than its factorization.

18100830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54872.

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

The square root of 18100830 is about 4254.5070219709. The cubic root of 18100830 is about 262.5625791844.

The spelling of 18100830 in words is "eighteen million, one hundred thousand, eight hundred thirty".