18486830 has 16 divisors (see below), whose sum is σ = 33346080. Its totient is φ = 7379232.

The previous prime is 18486827. The next prime is 18486847. The reversal of 18486830 is 3868481.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3911 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (2084130).

Almost surely, 2^18486830 is an apocalyptic number.

18486830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18486830 is a deficient number, since it is larger than the sum of its proper divisors (14859250).

18486830 is a wasteful number, since it uses less digits than its factorization.

18486830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 18486830 is about 4299.6313795487. The cubic root of 18486830 is about 264.4158486734.

The spelling of 18486830 in words is "eighteen million, four hundred eighty-six thousand, eight hundred thirty".