161799962 has 4 divisors (see below), whose sum is σ = 242699946. Its totient is φ = 80899980.

The previous prime is 161799959. The next prime is 161799971. The reversal of 161799962 is 269997161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 107350321 + 54449641 = 10361^2 + 7379^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161799962.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40449989 + ... + 40449992.

Almost surely, 2^161799962 is an apocalyptic number.

161799962 is a deficient number, since it is larger than the sum of its proper divisors (80899984).

161799962 is an equidigital number, since it uses as much as digits as its factorization.

161799962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80899983.

The product of its digits is 367416, while the sum is 50.

The square root of 161799962 is about 12720.0613992229. The cubic root of 161799962 is about 544.9117069324.

The spelling of 161799962 in words is "one hundred sixty-one million, seven hundred ninety-nine thousand, nine hundred sixty-two".