165153605 has 8 divisors (see below), whose sum is σ = 208615200. Its totient is φ = 125168976.

The previous prime is 165153601. The next prime is 165153641. The reversal of 165153605 is 506351561.

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

It is a cyclic number.

It is not a de Polignac number, because 165153605 - 2² = 165153601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165153601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869135 + ... + 869324.

It is an arithmetic number, because the mean of its divisors is an integer number (26076900).

Almost surely, 2^165153605 is an apocalyptic number.

It is an amenable number.

165153605 is a deficient number, since it is larger than the sum of its proper divisors (43461595).

165153605 is a wasteful number, since it uses less digits than its factorization.

165153605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738483.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 165153605 is about 12851.2102542912. The cubic root of 165153605 is about 548.6508032046.

The spelling of 165153605 in words is "one hundred sixty-five million, one hundred fifty-three thousand, six hundred five".