194697440479 has 16 divisors (see below), whose sum is σ = 200967072768. Its totient is φ = 188513230752.

The previous prime is 194697440453. The next prime is 194697440549. The reversal of 194697440479 is 974044796491.

It is a cyclic number.

It is not a de Polignac number, because 194697440479 - 2¹³ = 194697432287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194697440479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194697441479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2598489 + ... + 2672365.

It is an arithmetic number, because the mean of its divisors is an integer number (12560442048).

Almost surely, 2^194697440479 is an apocalyptic number.

194697440479 is a deficient number, since it is larger than the sum of its proper divisors (6269632289).

194697440479 is a wasteful number, since it uses less digits than its factorization.

194697440479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74454.

The product of its (nonzero) digits is 54867456, while the sum is 64.

The spelling of 194697440479 in words is "one hundred ninety-four billion, six hundred ninety-seven million, four hundred forty thousand, four hundred seventy-nine".