165409746 has 16 divisors (see below), whose sum is σ = 332649408. Its totient is φ = 54831600.

The previous prime is 165409697. The next prime is 165409759. The reversal of 165409746 is 647904561.

165409746 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 165409698 and 165409707.

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, 75070 + ... + 77241.

It is an arithmetic number, because the mean of its divisors is an integer number (20790588).

Almost surely, 2^165409746 is an apocalyptic number.

165409746 is an abundant number, since it is smaller than the sum of its proper divisors (167239662).

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

165409746 is a wasteful number, since it uses less digits than its factorization.

165409746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152497.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 165409746 is about 12861.1720305733. The cubic root of 165409746 is about 548.9342956063.

The spelling of 165409746 in words is "one hundred sixty-five million, four hundred nine thousand, seven hundred forty-six".