191607007165 has 12 divisors (see below), whose sum is σ = 267467740956. Its totient is φ = 131387661888.

The previous prime is 191607007139. The next prime is 191607007171. The reversal of 191607007165 is 561700706191.

It can be written as a sum of positive squares in 2 ways, for example, as 134475490681 + 57131516484 = 366709^2 + 239022^2 .

It is not a de Polignac number, because 191607007165 - 2¹⁵ = 191606974397 is a prime.

It is a super-2 number, since 2×191607007165² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391034464 + ... + 391034953.

It is an arithmetic number, because the mean of its divisors is an integer number (22288978413).

Almost surely, 2^191607007165 is an apocalyptic number.

It is an amenable number.

191607007165 is a deficient number, since it is larger than the sum of its proper divisors (75860733791).

191607007165 is an equidigital number, since it uses as much as digits as its factorization.

191607007165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782069436 (or 782069429 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 43.

The spelling of 191607007165 in words is "one hundred ninety-one billion, six hundred seven million, seven thousand, one hundred sixty-five".