161182666 has 8 divisors (see below), whose sum is σ = 252285984. Its totient is φ = 77087340.

The previous prime is 161182663. The next prime is 161182691. The reversal of 161182666 is 666281161.

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

It is not an unprimeable number, because it can be changed into a prime (161182663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751940 + ... + 1752031.

It is an arithmetic number, because the mean of its divisors is an integer number (31535748).

Almost surely, 2^161182666 is an apocalyptic number.

161182666 is a deficient number, since it is larger than the sum of its proper divisors (91103318).

161182666 is a wasteful number, since it uses less digits than its factorization.

161182666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503996.

The product of its digits is 20736, while the sum is 37.

The square root of 161182666 is about 12695.7735487051. The cubic root of 161182666 is about 544.2178450079.

The spelling of 161182666 in words is "one hundred sixty-one million, one hundred eighty-two thousand, six hundred sixty-six".