2646163426 has 4 divisors (see below), whose sum is σ = 3969245142. Its totient is φ = 1323081712.

The previous prime is 2646163423. The next prime is 2646163427. The reversal of 2646163426 is 6243616462.

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

It can be written as a sum of positive squares in only one way, i.e., 2642062801 + 4100625 = 51401^2 + 2025^2 .

It is not an unprimeable number, because it can be changed into a prime (2646163423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661540855 + ... + 661540858.

Almost surely, 2^2646163426 is an apocalyptic number.

2646163426 is a deficient number, since it is larger than the sum of its proper divisors (1323081716).

2646163426 is a wasteful number, since it uses less digits than its factorization.

2646163426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323081715.

The product of its digits is 248832, while the sum is 40.

The square root of 2646163426 is about 51440.8731068982. The cubic root of 2646163426 is about 1383.1593626610.

Adding to 2646163426 its reverse (6243616462), we get a palindrome (8889779888).

The spelling of 2646163426 in words is "two billion, six hundred forty-six million, one hundred sixty-three thousand, four hundred twenty-six".