165748879 has 4 divisors (see below), whose sum is σ = 172955376. Its totient is φ = 158542384.

The previous prime is 165748867. The next prime is 165748897. The reversal of 165748879 is 978847561.

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 165748879 - 2¹⁷ = 165617807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165748829) 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, 3603214 + ... + 3603259.

It is an arithmetic number, because the mean of its divisors is an integer number (43238844).

Almost surely, 2^165748879 is an apocalyptic number.

165748879 is a deficient number, since it is larger than the sum of its proper divisors (7206497).

165748879 is an equidigital number, since it uses as much as digits as its factorization.

165748879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206496.

The product of its digits is 3386880, while the sum is 55.

The square root of 165748879 is about 12874.3496534776. The cubic root of 165748879 is about 549.3091922030.

The spelling of 165748879 in words is "one hundred sixty-five million, seven hundred forty-eight thousand, eight hundred seventy-nine".