165849003 has 12 divisors (see below), whose sum is σ = 240517368. Its totient is φ = 110124000.

The previous prime is 165848987. The next prime is 165849007. The reversal of 165849003 is 300948561.

165849003 is a `hidden beast` number, since 165 + 8 + 490 + 0 + 3 = 666.

It is not a de Polignac number, because 165849003 - 2⁴ = 165848987 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (165849007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34450 + ... + 38967.

It is an arithmetic number, because the mean of its divisors is an integer number (20043114).

Almost surely, 2^165849003 is an apocalyptic number.

165849003 is a deficient number, since it is larger than the sum of its proper divisors (74668365).

165849003 is a wasteful number, since it uses less digits than its factorization.

165849003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73674 (or 73671 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 165849003 is about 12878.2375735191. The cubic root of 165849003 is about 549.4197770894.

The spelling of 165849003 in words is "one hundred sixty-five million, eight hundred forty-nine thousand, three".