2161466394 has 16 divisors (see below), whose sum is σ = 4577223168. Its totient is φ = 678107072.

The previous prime is 2161466393. The next prime is 2161466449. The reversal of 2161466394 is 4936641612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2161466393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10595322 + ... + 10595525.

It is an arithmetic number, because the mean of its divisors is an integer number (286076448).

Almost surely, 2^2161466394 is an apocalyptic number.

2161466394 is an abundant number, since it is smaller than the sum of its proper divisors (2415756774).

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

2161466394 is a wasteful number, since it uses less digits than its factorization.

2161466394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21190869.

The product of its digits is 186624, while the sum is 42.

The square root of 2161466394 is about 46491.5733655036. The cubic root of 2161466394 is about 1292.9532710051.

The spelling of 2161466394 in words is "two billion, one hundred sixty-one million, four hundred sixty-six thousand, three hundred ninety-four".