2164442797 has 12 divisors (see below), whose sum is σ = 2434432000. Its totient is φ = 1921910760.

The previous prime is 2164442783. The next prime is 2164442843. The reversal of 2164442797 is 7972444612.

It is a de Polignac number, because none of the positive numbers 2^k-2164442797 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164442897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202797 + ... + 213202.

Almost surely, 2^2164442797 is an apocalyptic number.

It is an amenable number.

2164442797 is a deficient number, since it is larger than the sum of its proper divisors (269989203).

2164442797 is a wasteful number, since it uses less digits than its factorization.

2164442797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416064 (or 416053 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 2164442797 is about 46523.5724875036. The cubic root of 2164442797 is about 1293.5464770688.

The spelling of 2164442797 in words is "two billion, one hundred sixty-four million, four hundred forty-two thousand, seven hundred ninety-seven".