165338137 has 4 divisors (see below), whose sum is σ = 166527760. Its totient is φ = 164148516.

The previous prime is 165338093. The next prime is 165338143. The reversal of 165338137 is 731833561.

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 165338137 - 2⁷ = 165338009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165338096 and 165338105.

It is not an unprimeable number, because it can be changed into a prime (165338737) 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, 594603 + ... + 594880.

It is an arithmetic number, because the mean of its divisors is an integer number (41631940).

Almost surely, 2^165338137 is an apocalyptic number.

It is an amenable number.

165338137 is a deficient number, since it is larger than the sum of its proper divisors (1189623).

165338137 is a wasteful number, since it uses less digits than its factorization.

165338137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189622.

The product of its digits is 45360, while the sum is 37.

The square root of 165338137 is about 12858.3878071864. The cubic root of 165338137 is about 548.8550695010.

The spelling of 165338137 in words is "one hundred sixty-five million, three hundred thirty-eight thousand, one hundred thirty-seven".