194797228537 has 8 divisors (see below), whose sum is σ = 205839671040. Its totient is φ = 183969202560.

The previous prime is 194797228523. The next prime is 194797228553. The reversal of 194797228537 is 735822797491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194797228537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194797228037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53602264 + ... + 53605897.

It is an arithmetic number, because the mean of its divisors is an integer number (25729958880).

Almost surely, 2^194797228537 is an apocalyptic number.

It is an amenable number.

194797228537 is a deficient number, since it is larger than the sum of its proper divisors (11042442503).

194797228537 is a wasteful number, since it uses less digits than its factorization.

194797228537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107208263.

The product of its digits is 53343360, while the sum is 64.

The spelling of 194797228537 in words is "one hundred ninety-four billion, seven hundred ninety-seven million, two hundred twenty-eight thousand, five hundred thirty-seven".