161166422 has 4 divisors (see below), whose sum is σ = 241749636. Its totient is φ = 80583210.

The previous prime is 161166403. The next prime is 161166433. The reversal of 161166422 is 224661161.

161166422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40291604 + ... + 40291607.

It is an arithmetic number, because the mean of its divisors is an integer number (60437409).

Almost surely, 2^161166422 is an apocalyptic number.

161166422 is a deficient number, since it is larger than the sum of its proper divisors (80583214).

161166422 is an equidigital number, since it uses as much as digits as its factorization.

161166422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80583213.

The product of its digits is 3456, while the sum is 29.

The square root of 161166422 is about 12695.1337921268. The cubic root of 161166422 is about 544.1995622899.

The spelling of 161166422 in words is "one hundred sixty-one million, one hundred sixty-six thousand, four hundred twenty-two".