147161791 has 4 divisors (see below), whose sum is σ = 168184912. Its totient is φ = 126138672.

The previous prime is 147161789. The next prime is 147161801. The reversal of 147161791 is 197161741.

147161791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 147161791 - 2¹ = 147161789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147161791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147161591) 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, 10511550 + ... + 10511563.

It is an arithmetic number, because the mean of its divisors is an integer number (42046228).

Almost surely, 2^147161791 is an apocalyptic number.

147161791 is a deficient number, since it is larger than the sum of its proper divisors (21023121).

147161791 is an equidigital number, since it uses as much as digits as its factorization.

147161791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21023120.

The product of its digits is 10584, while the sum is 37.

The square root of 147161791 is about 12131.0259665042. The cubic root of 147161791 is about 527.9567598792.

The spelling of 147161791 in words is "one hundred forty-seven million, one hundred sixty-one thousand, seven hundred ninety-one".