165157238 has 8 divisors (see below), whose sum is σ = 253497288. Its totient is φ = 80658144.

The previous prime is 165157231. The next prime is 165157259. The reversal of 165157238 is 832751561.

165157238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165157231) 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, 960131 + ... + 960302.

It is an arithmetic number, because the mean of its divisors is an integer number (31687161).

Almost surely, 2^165157238 is an apocalyptic number.

165157238 is a deficient number, since it is larger than the sum of its proper divisors (88340050).

165157238 is a wasteful number, since it uses less digits than its factorization.

165157238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920478.

The product of its digits is 50400, while the sum is 38.

The square root of 165157238 is about 12851.3516020689. The cubic root of 165157238 is about 548.6548261943.

The spelling of 165157238 in words is "one hundred sixty-five million, one hundred fifty-seven thousand, two hundred thirty-eight".