165493770 has 32 divisors (see below), whose sum is σ = 427738752. Its totient is φ = 40736832.

The previous prime is 165493751. The next prime is 165493771. The reversal of 165493770 is 77394561.

165493770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165493771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211782 + ... + 212561.

It is an arithmetic number, because the mean of its divisors is an integer number (13366836).

Almost surely, 2^165493770 is an apocalyptic number.

165493770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165493770 is an abundant number, since it is smaller than the sum of its proper divisors (262244982).

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

165493770 is a wasteful number, since it uses less digits than its factorization.

165493770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424366.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 165493770 is about 12864.4381921637. The cubic root of 165493770 is about 549.0272281545.

The spelling of 165493770 in words is "one hundred sixty-five million, four hundred ninety-three thousand, seven hundred seventy".