194518032864 has 48 divisors (see below), whose sum is σ = 510673540608. Its totient is φ = 64831254912.

The previous prime is 194518032853. The next prime is 194518032931. The reversal of 194518032864 is 468230815491.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673299 + ... + 917805.

It is an arithmetic number, because the mean of its divisors is an integer number (10639032096).

Almost surely, 2^194518032864 is an apocalyptic number.

It is an amenable number.

194518032864 is an abundant number, since it is smaller than the sum of its proper divisors (316155507744).

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

194518032864 is a wasteful number, since it uses less digits than its factorization.

194518032864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252807 (or 252799 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 194518032864 in words is "one hundred ninety-four billion, five hundred eighteen million, thirty-two thousand, eight hundred sixty-four".