161411166 has 24 divisors (see below), whose sum is σ = 399685104. Its totient is φ = 46117440.

The previous prime is 161411153. The next prime is 161411189. The reversal of 161411166 is 661114161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640395 + ... + 640646.

It is an arithmetic number, because the mean of its divisors is an integer number (16653546).

Almost surely, 2^161411166 is an apocalyptic number.

161411166 is an abundant number, since it is smaller than the sum of its proper divisors (238273938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161411166 is a wasteful number, since it uses less digits than its factorization.

161411166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281056 (or 1281053 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 161411166 is about 12704.7694193952. The cubic root of 161411166 is about 544.4748930385.

The spelling of 161411166 in words is "one hundred sixty-one million, four hundred eleven thousand, one hundred sixty-six".