2161443468 has 48 divisors (see below), whose sum is σ = 5087174400. Its totient is φ = 714243264.

The previous prime is 2161443451. The next prime is 2161443481. The reversal of 2161443468 is 8643441612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1327671 + ... + 1329297.

It is an arithmetic number, because the mean of its divisors is an integer number (105982800).

Almost surely, 2^2161443468 is an apocalyptic number.

It is an amenable number.

2161443468 is an abundant number, since it is smaller than the sum of its proper divisors (2925730932).

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

2161443468 is a wasteful number, since it uses less digits than its factorization.

2161443468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526 (or 2524 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 2161443468 is about 46491.3268040395. The cubic root of 2161443468 is about 1292.9486996716.

The spelling of 2161443468 in words is "two billion, one hundred sixty-one million, four hundred forty-three thousand, four hundred sixty-eight".