161064836 has 12 divisors (see below), whose sum is σ = 283295628. Its totient is φ = 80123232.

The previous prime is 161064821. The next prime is 161064877. The reversal of 161064836 is 638460161.

It can be written as a sum of positive squares in 2 ways, for example, as 82919236 + 78145600 = 9106^2 + 8840^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161064796 and 161064805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101411 + ... + 102986.

It is an arithmetic number, because the mean of its divisors is an integer number (23607969).

Almost surely, 2^161064836 is an apocalyptic number.

It is an amenable number.

161064836 is a deficient number, since it is larger than the sum of its proper divisors (122230792).

161064836 is a wasteful number, since it uses less digits than its factorization.

161064836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204598 (or 204596 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 161064836 is about 12691.1321795969. The cubic root of 161064836 is about 544.0851987738.

The spelling of 161064836 in words is "one hundred sixty-one million, sixty-four thousand, eight hundred thirty-six".