165703099 has 4 divisors (see below), whose sum is σ = 169744680. Its totient is φ = 161661520.

The previous prime is 165703073. The next prime is 165703103. The reversal of 165703099 is 990307561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990307561 = 73 ⋅13565857.

It is a cyclic number.

It is not a de Polignac number, because 165703099 - 2⁵ = 165703067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165703039) 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, 2020729 + ... + 2020810.

It is an arithmetic number, because the mean of its divisors is an integer number (42436170).

Almost surely, 2^165703099 is an apocalyptic number.

165703099 is a deficient number, since it is larger than the sum of its proper divisors (4041581).

165703099 is an equidigital number, since it uses as much as digits as its factorization.

165703099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041580.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 165703099 is about 12872.5715768062. The cubic root of 165703099 is about 549.2586143035.

The spelling of 165703099 in words is "one hundred sixty-five million, seven hundred three thousand, ninety-nine".