165230438 has 4 divisors (see below), whose sum is σ = 247845660. Its totient is φ = 82615218.

The previous prime is 165230423. The next prime is 165230449. The reversal of 165230438 is 834032561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834032561 = 8017 ⋅104033.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41307608 + ... + 41307611.

It is an arithmetic number, because the mean of its divisors is an integer number (61961415).

Almost surely, 2^165230438 is an apocalyptic number.

165230438 is a deficient number, since it is larger than the sum of its proper divisors (82615222).

165230438 is an equidigital number, since it uses as much as digits as its factorization.

165230438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82615221.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 165230438 is about 12854.1992360473. The cubic root of 165230438 is about 548.7358713887.

Adding to 165230438 its reverse (834032561), we get a palindrome (999262999).

The spelling of 165230438 in words is "one hundred sixty-five million, two hundred thirty thousand, four hundred thirty-eight".