165430436 has 12 divisors (see below), whose sum is σ = 289898112. Its totient is φ = 82602408.

The previous prime is 165430423. The next prime is 165430439. The reversal of 165430436 is 634034561.

It is not an unprimeable number, because it can be changed into a prime (165430439) 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, 24860 + ... + 30803.

It is an arithmetic number, because the mean of its divisors is an integer number (24158176).

Almost surely, 2^165430436 is an apocalyptic number.

It is an amenable number.

165430436 is a deficient number, since it is larger than the sum of its proper divisors (124467676).

165430436 is a wasteful number, since it uses less digits than its factorization.

165430436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56410 (or 56408 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 165430436 is about 12861.9763644628. The cubic root of 165430436 is about 548.9571821599.

Adding to 165430436 its reverse (634034561), we get a palindrome (799464997).

The spelling of 165430436 in words is "one hundred sixty-five million, four hundred thirty thousand, four hundred thirty-six".