18985371314 has 16 divisors (see below), whose sum is σ = 35049916608. Its totient is φ = 7510696272.

The previous prime is 18985371313. The next prime is 18985371343. The reversal of 18985371314 is 41317358981.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18985371313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52157432 + ... + 52157795.

It is an arithmetic number, because the mean of its divisors is an integer number (2190619788).

Almost surely, 2^18985371314 is an apocalyptic number.

18985371314 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18985371314 is a deficient number, since it is larger than the sum of its proper divisors (16064545294).

18985371314 is a wasteful number, since it uses less digits than its factorization.

18985371314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104315249.

The product of its digits is 725760, while the sum is 50.

The spelling of 18985371314 in words is "eighteen billion, nine hundred eighty-five million, three hundred seventy-one thousand, three hundred fourteen".