165167213 has 4 divisors (see below), whose sum is σ = 165950208. Its totient is φ = 164384220.

The previous prime is 165167201. The next prime is 165167221. The reversal of 165167213 is 312761561.

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 a de Polignac number, because none of the positive numbers 2^k-165167213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165167213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165167263) 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, 391181 + ... + 391602.

It is an arithmetic number, because the mean of its divisors is an integer number (41487552).

Almost surely, 2^165167213 is an apocalyptic number.

It is an amenable number.

165167213 is a deficient number, since it is larger than the sum of its proper divisors (782995).

165167213 is an equidigital number, since it uses as much as digits as its factorization.

165167213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782994.

The product of its digits is 7560, while the sum is 32.

The square root of 165167213 is about 12851.7396876843. The cubic root of 165167213 is about 548.6658716719.

The spelling of 165167213 in words is "one hundred sixty-five million, one hundred sixty-seven thousand, two hundred thirteen".