165894930 has 24 divisors (see below), whose sum is σ = 431327052. Its totient is φ = 44238624.

The previous prime is 165894907. The next prime is 165894931. The reversal of 165894930 is 39498561.

It is a happy number.

165894930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 165559689 + 335241 = 12867^2 + 579^2 .

It is a super-2 number, since 2×165894930² = 55042255599409800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (165894931) 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, 921549 + ... + 921728.

Almost surely, 2^165894930 is an apocalyptic number.

165894930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165894930 is an abundant number, since it is smaller than the sum of its proper divisors (265432122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165894930 is a wasteful number, since it uses less digits than its factorization.

165894930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843290 (or 1843287 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 165894930 is about 12880.0205745177. The cubic root of 165894930 is about 549.4704876209.

The spelling of 165894930 in words is "one hundred sixty-five million, eight hundred ninety-four thousand, nine hundred thirty".