161862866 has 8 divisors (see below), whose sum is σ = 264866544. Its totient is φ = 73574020.

The previous prime is 161862847. The next prime is 161862871. The reversal of 161862866 is 668268161.

161862866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3678680 + ... + 3678723.

It is an arithmetic number, because the mean of its divisors is an integer number (33108318).

Almost surely, 2^161862866 is an apocalyptic number.

161862866 is a deficient number, since it is larger than the sum of its proper divisors (103003678).

161862866 is a wasteful number, since it uses less digits than its factorization.

161862866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357416.

The product of its digits is 165888, while the sum is 44.

The square root of 161862866 is about 12722.5337885187. The cubic root of 161862866 is about 544.9823140461.

The spelling of 161862866 in words is "one hundred sixty-one million, eight hundred sixty-two thousand, eight hundred sixty-six".