18348475194 has 24 divisors (see below), whose sum is σ = 45434319840. Its totient is φ = 5242421448.

The previous prime is 18348475181. The next prime is 18348475219. The reversal of 18348475194 is 49157484381.

18348475194 is a `hidden beast` number, since 1 + 8 + 3 + 484 + 75 + 1 + 94 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18348475194.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72811284 + ... + 72811535.

It is an arithmetic number, because the mean of its divisors is an integer number (1893096660).

Almost surely, 2^18348475194 is an apocalyptic number.

18348475194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18348475194 is an abundant number, since it is smaller than the sum of its proper divisors (27085844646).

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

18348475194 is a wasteful number, since it uses less digits than its factorization.

18348475194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145622834 (or 145622831 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 18348475194 in words is "eighteen billion, three hundred forty-eight million, four hundred seventy-five thousand, one hundred ninety-four".