165167243 has 6 divisors (see below), whose sum is σ = 166089564. Its totient is φ = 164246856.

The previous prime is 165167227. The next prime is 165167251. The reversal of 165167243 is 342761561.

It is not a de Polignac number, because 165167243 - 2⁴ = 165167227 is a prime.

It is a Duffinian number.

Its product of digits (30240) is a multiple of the sum of its prime divisors (1080).

It is not an unprimeable number, because it can be changed into a prime (165167263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193205 + ... + 194057.

It is an arithmetic number, because the mean of its divisors is an integer number (27681594).

Almost surely, 2^165167243 is an apocalyptic number.

165167243 is a deficient number, since it is larger than the sum of its proper divisors (922321).

165167243 is an frugal number, since it uses more digits than its factorization.

165167243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933 (or 1080 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 165167243 is about 12851.7408548414. The cubic root of 165167243 is about 548.6659048907.

The spelling of 165167243 in words is "one hundred sixty-five million, one hundred sixty-seven thousand, two hundred forty-three".