2161380467 has 4 divisors (see below), whose sum is σ = 2161489200. Its totient is φ = 2161271736.

The previous prime is 2161380461. The next prime is 2161380499. The reversal of 2161380467 is 7640831612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2161380467 - 2²⁰ = 2160331891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2161380467.

It is not an unprimeable number, because it can be changed into a prime (2161380461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15092 + ... + 67457.

It is an arithmetic number, because the mean of its divisors is an integer number (540372300).

Almost surely, 2^2161380467 is an apocalyptic number.

2161380467 is a deficient number, since it is larger than the sum of its proper divisors (108733).

2161380467 is an equidigital number, since it uses as much as digits as its factorization.

2161380467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108732.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 2161380467 is about 46490.6492426165. The cubic root of 2161380467 is about 1292.9361374103.

The spelling of 2161380467 in words is "two billion, one hundred sixty-one million, three hundred eighty thousand, four hundred sixty-seven".