2646622163 has 4 divisors (see below), whose sum is σ = 2659165608. Its totient is φ = 2634078720.

The previous prime is 2646622063. The next prime is 2646622171. The reversal of 2646622163 is 3612266462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2646622163 - 2¹² = 2646618067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2646622193) 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, 6271406 + ... + 6271827.

It is an arithmetic number, because the mean of its divisors is an integer number (664791402).

Almost surely, 2^2646622163 is an apocalyptic number.

2646622163 is a deficient number, since it is larger than the sum of its proper divisors (12543445).

2646622163 is a wasteful number, since it uses less digits than its factorization.

2646622163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543444.

The product of its digits is 124416, while the sum is 38.

The square root of 2646622163 is about 51445.3317901634. The cubic root of 2646622163 is about 1383.2392858822.

The spelling of 2646622163 in words is "two billion, six hundred forty-six million, six hundred twenty-two thousand, one hundred sixty-three".