161718796 has 12 divisors (see below), whose sum is σ = 295312752. Its totient is φ = 77343728.

The previous prime is 161718793. The next prime is 161718811. The reversal of 161718796 is 697817161.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (161718793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878815 + ... + 878998.

It is an arithmetic number, because the mean of its divisors is an integer number (24609396).

Almost surely, 2^161718796 is an apocalyptic number.

It is an amenable number.

161718796 is a deficient number, since it is larger than the sum of its proper divisors (133593956).

161718796 is a wasteful number, since it uses less digits than its factorization.

161718796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757840 (or 1757838 counting only the distinct ones).

The product of its digits is 127008, while the sum is 46.

The square root of 161718796 is about 12716.8705269811. The cubic root of 161718796 is about 544.8205744403.

The spelling of 161718796 in words is "one hundred sixty-one million, seven hundred eighteen thousand, seven hundred ninety-six".