18861094 has 8 divisors (see below), whose sum is σ = 32333328. Its totient is φ = 8083320.

The previous prime is 18861077. The next prime is 18861097. The reversal of 18861094 is 49016881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18861097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673597 + ... + 673624.

It is an arithmetic number, because the mean of its divisors is an integer number (4041666).

Almost surely, 2^18861094 is an apocalyptic number.

18861094 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18861094 is a deficient number, since it is larger than the sum of its proper divisors (13472234).

18861094 is a wasteful number, since it uses less digits than its factorization.

18861094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347230.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18861094 is about 4342.9361036055. The cubic root of 18861094 is about 266.1882982797.

The spelling of 18861094 in words is "eighteen million, eight hundred sixty-one thousand, ninety-four".