194253591385 has 16 divisors (see below), whose sum is σ = 269042602752. Its totient is φ = 131883624000.

The previous prime is 194253591377. The next prime is 194253591401. The reversal of 194253591385 is 583195352491.

It is not a de Polignac number, because 194253591385 - 2³ = 194253591377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27472221 + ... + 27479290.

It is an arithmetic number, because the mean of its divisors is an integer number (16815162672).

Almost surely, 2^194253591385 is an apocalyptic number.

It is an amenable number.

194253591385 is a deficient number, since it is larger than the sum of its proper divisors (74789011367).

194253591385 is a wasteful number, since it uses less digits than its factorization.

194253591385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54951624.

The product of its digits is 5832000, while the sum is 55.

The spelling of 194253591385 in words is "one hundred ninety-four billion, two hundred fifty-three million, five hundred ninety-one thousand, three hundred eighty-five".