2164779941 has 16 divisors (see below), whose sum is σ = 2347327488. Its totient is φ = 1990494000.

The previous prime is 2164779931. The next prime is 2164779959. The reversal of 2164779941 is 1499774612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164779941 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 2164779941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164779931) 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, 97610 + ... + 117716.

It is an arithmetic number, because the mean of its divisors is an integer number (146707968).

Almost surely, 2^2164779941 is an apocalyptic number.

It is an amenable number.

2164779941 is a deficient number, since it is larger than the sum of its proper divisors (182547547).

2164779941 is a wasteful number, since it uses less digits than its factorization.

2164779941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20312.

The product of its digits is 762048, while the sum is 50.

The square root of 2164779941 is about 46527.1957139048. The cubic root of 2164779941 is about 1293.6136365848.

The spelling of 2164779941 in words is "two billion, one hundred sixty-four million, seven hundred seventy-nine thousand, nine hundred forty-one".