194426439245 has 16 divisors (see below), whose sum is σ = 234149937840. Its totient is φ = 154982536704.

The previous prime is 194426439211. The next prime is 194426439269. The reversal of 194426439245 is 542934624491.

It can be written as a sum of positive squares in 8 ways, for example, as 4429834249 + 189996604996 = 66557^2 + 435886^2 .

It is a cyclic number.

It is not a de Polignac number, because 194426439245 - 2²⁰ = 194425390669 is a prime.

It is a congruent number.

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, 13132187 + ... + 13146983.

It is an arithmetic number, because the mean of its divisors is an integer number (14634371115).

Almost surely, 2^194426439245 is an apocalyptic number.

It is an amenable number.

194426439245 is a deficient number, since it is larger than the sum of its proper divisors (39723498595).

194426439245 is a wasteful number, since it uses less digits than its factorization.

194426439245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24064.

The product of its digits is 7464960, while the sum is 53.

The spelling of 194426439245 in words is "one hundred ninety-four billion, four hundred twenty-six million, four hundred thirty-nine thousand, two hundred forty-five".