165088613 has 4 divisors (see below), whose sum is σ = 165331008. Its totient is φ = 164846220.

The previous prime is 165088607. The next prime is 165088621. The reversal of 165088613 is 316880561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 316880561 = 17 ⋅18640033.

It is a cyclic number.

It is not a de Polignac number, because 165088613 - 2⁴ = 165088597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165088013) 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, 120173 + ... + 121538.

It is an arithmetic number, because the mean of its divisors is an integer number (41332752).

Almost surely, 2^165088613 is an apocalyptic number.

It is an amenable number.

165088613 is a deficient number, since it is larger than the sum of its proper divisors (242395).

165088613 is an equidigital number, since it uses as much as digits as its factorization.

165088613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242394.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 165088613 is about 12848.6813720319. The cubic root of 165088613 is about 548.5788245731.

The spelling of 165088613 in words is "one hundred sixty-five million, eighty-eight thousand, six hundred thirteen".