191992265273 has 4 divisors (see below), whose sum is σ = 202097121360. Its totient is φ = 181887409188.

The previous prime is 191992265221. The next prime is 191992265279. The reversal of 191992265273 is 372562299191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 191992265273 - 2³⁴ = 174812396089 is a prime.

It is a super-2 number, since 2×191992265273² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191992265279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5052428015 + ... + 5052428052.

It is an arithmetic number, because the mean of its divisors is an integer number (50524280340).

Almost surely, 2^191992265273 is an apocalyptic number.

It is an amenable number.

191992265273 is a deficient number, since it is larger than the sum of its proper divisors (10104856087).

191992265273 is a wasteful number, since it uses less digits than its factorization.

191992265273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10104856086.

The product of its digits is 3674160, while the sum is 56.

The spelling of 191992265273 in words is "one hundred ninety-one billion, nine hundred ninety-two million, two hundred sixty-five thousand, two hundred seventy-three".