161813463692 has 12 divisors (see below), whose sum is σ = 284218484256. Its totient is φ = 80608182480.

The previous prime is 161813463689. The next prime is 161813463737. The reversal of 161813463692 is 296364318161.

It is a self number, because there is not a number n which added to its sum of digits gives 161813463692.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74636123 + ... + 74638290.

It is an arithmetic number, because the mean of its divisors is an integer number (23684873688).

Almost surely, 2^161813463692 is an apocalyptic number.

It is an amenable number.

161813463692 is a deficient number, since it is larger than the sum of its proper divisors (122405020564).

161813463692 is a wasteful number, since it uses less digits than its factorization.

161813463692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149274688 (or 149274686 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The spelling of 161813463692 in words is "one hundred sixty-one billion, eight hundred thirteen million, four hundred sixty-three thousand, six hundred ninety-two".