2169941394 has 32 divisors (see below), whose sum is σ = 4530862080. Its totient is φ = 691515792.

The previous prime is 2169941393. The next prime is 2169941413. The reversal of 2169941394 is 4931499612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2169941393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512217 + ... + 516435.

It is an arithmetic number, because the mean of its divisors is an integer number (141589440).

Almost surely, 2^2169941394 is an apocalyptic number.

2169941394 is an abundant number, since it is smaller than the sum of its proper divisors (2360920686).

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

2169941394 is a wasteful number, since it uses less digits than its factorization.

2169941394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7974.

The product of its digits is 419904, while the sum is 48.

The square root of 2169941394 is about 46582.6297454319. The cubic root of 2169941394 is about 1294.6409352202.

The spelling of 2169941394 in words is "two billion, one hundred sixty-nine million, nine hundred forty-one thousand, three hundred ninety-four".