18034943895 has 32 divisors (see below), whose sum is σ = 32176290240. Its totient is φ = 9584386560.

The previous prime is 18034943863. The next prime is 18034943947. The reversal of 18034943895 is 59834943081.

18034943895 is a `hidden beast` number, since 1 + 80 + 3 + 49 + 438 + 95 = 666.

It is not a de Polignac number, because 18034943895 - 2⁵ = 18034943863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199774 + ... + 275643.

It is an arithmetic number, because the mean of its divisors is an integer number (1005509070).

Almost surely, 2^18034943895 is an apocalyptic number.

18034943895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18034943895 is a deficient number, since it is larger than the sum of its proper divisors (14141346345).

18034943895 is a wasteful number, since it uses less digits than its factorization.

18034943895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475712 (or 475706 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 18034943895 in words is "eighteen billion, thirty-four million, nine hundred forty-three thousand, eight hundred ninety-five".