165853005 has 8 divisors (see below), whose sum is σ = 265364832. Its totient is φ = 88454928.

The previous prime is 165852991. The next prime is 165853027. The reversal of 165853005 is 500358561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165853005 - 2⁶ = 165852941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5528419 + ... + 5528448.

It is an arithmetic number, because the mean of its divisors is an integer number (33170604).

Almost surely, 2^165853005 is an apocalyptic number.

165853005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165853005 is a deficient number, since it is larger than the sum of its proper divisors (99511827).

165853005 is a wasteful number, since it uses less digits than its factorization.

165853005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056875.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 165853005 is about 12878.3929509858. The cubic root of 165853005 is about 549.4241962904.

The spelling of 165853005 in words is "one hundred sixty-five million, eight hundred fifty-three thousand, five".