161964596 has 24 divisors (see below), whose sum is σ = 291008256. Its totient is φ = 78828480.

The previous prime is 161964587. The next prime is 161964599. The reversal of 161964596 is 695469161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161964596.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161964599) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 98735 + ... + 100361.

It is an arithmetic number, because the mean of its divisors is an integer number (12125344).

Almost surely, 2^161964596 is an apocalyptic number.

It is an amenable number.

161964596 is a deficient number, since it is larger than the sum of its proper divisors (129043660).

161964596 is a wasteful number, since it uses less digits than its factorization.

161964596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279 (or 2277 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The square root of 161964596 is about 12726.5311848909. The cubic root of 161964596 is about 545.0964630197.

The spelling of 161964596 in words is "one hundred sixty-one million, nine hundred sixty-four thousand, five hundred ninety-six".