165442870 has 8 divisors (see below), whose sum is σ = 297797184. Its totient is φ = 66177144.

The previous prime is 165442853. The next prime is 165442891. The reversal of 165442870 is 78244561.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8272134 + ... + 8272153.

It is an arithmetic number, because the mean of its divisors is an integer number (37224648).

Almost surely, 2^165442870 is an apocalyptic number.

165442870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165442870 is a deficient number, since it is larger than the sum of its proper divisors (132354314).

165442870 is a wasteful number, since it uses less digits than its factorization.

165442870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16544294.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 165442870 is about 12862.4597181099. The cubic root of 165442870 is about 548.9709352974.

The spelling of 165442870 in words is "one hundred sixty-five million, four hundred forty-two thousand, eight hundred seventy".