194938998518 has 16 divisors (see below), whose sum is σ = 319096232784. Its totient is φ = 88579428960.

The previous prime is 194938998503. The next prime is 194938998533. The reversal of 194938998518 is 815899839491.

194938998518 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (194938998503) and next prime (194938998533).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392005 + ... + 1525632.

It is an arithmetic number, because the mean of its divisors is an integer number (19943514549).

Almost surely, 2^194938998518 is an apocalyptic number.

194938998518 is a deficient number, since it is larger than the sum of its proper divisors (124157234266).

194938998518 is a wasteful number, since it uses less digits than its factorization.

194938998518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920687.

The product of its digits is 201553920, while the sum is 74.

The spelling of 194938998518 in words is "one hundred ninety-four billion, nine hundred thirty-eight million, nine hundred ninety-eight thousand, five hundred eighteen".