165199029 has 4 divisors (see below), whose sum is σ = 220265376. Its totient is φ = 110132684.

The previous prime is 165199003. The next prime is 165199049. The reversal of 165199029 is 920991561.

It is a happy number.

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 not a de Polignac number, because 165199029 - 2²¹ = 163101877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165199049) 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, 27533169 + ... + 27533174.

It is an arithmetic number, because the mean of its divisors is an integer number (55066344).

Almost surely, 2^165199029 is an apocalyptic number.

It is an amenable number.

165199029 is a deficient number, since it is larger than the sum of its proper divisors (55066347).

165199029 is an equidigital number, since it uses as much as digits as its factorization.

165199029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55066346.

The product of its (nonzero) digits is 43740, while the sum is 42.

The square root of 165199029 is about 12852.9774371544. The cubic root of 165199029 is about 548.7010990683.

The spelling of 165199029 in words is "one hundred sixty-five million, one hundred ninety-nine thousand, twenty-nine".