18871314 has 32 divisors (see below), whose sum is σ = 47056896. Its totient is φ = 4901520.

The previous prime is 18871301. The next prime is 18871331. The reversal of 18871314 is 41317881.

It is a super-2 number, since 2×18871314² = 712252984173192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19962 + ... + 20885.

It is an arithmetic number, because the mean of its divisors is an integer number (1470528).

Almost surely, 2^18871314 is an apocalyptic number.

18871314 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18871314 is an abundant number, since it is smaller than the sum of its proper divisors (28185582).

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

18871314 is a wasteful number, since it uses less digits than its factorization.

18871314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40870.

The product of its digits is 5376, while the sum is 33.

The square root of 18871314 is about 4344.1125676023. The cubic root of 18871314 is about 266.2363681883.

The spelling of 18871314 in words is "eighteen million, eight hundred seventy-one thousand, three hundred fourteen".