2646143946 has 24 divisors (see below), whose sum is σ = 6035065920. Its totient is φ = 835624296.

The previous prime is 2646143909. The next prime is 2646143957. The reversal of 2646143946 is 6493416462.

2646143946 is a `hidden beast` number, since 26 + 4 + 614 + 3 + 9 + 4 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3868290 + ... + 3868973.

It is an arithmetic number, because the mean of its divisors is an integer number (251461080).

Almost surely, 2^2646143946 is an apocalyptic number.

2646143946 is an abundant number, since it is smaller than the sum of its proper divisors (3388921974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2646143946 is a wasteful number, since it uses less digits than its factorization.

2646143946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737290 (or 7737287 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 2646143946 is about 51440.6837629517. The cubic root of 2646143946 is about 1383.1559685634.

It can be divided in two parts, 26461 and 43946, that added together give a palindrome (70407).

The spelling of 2646143946 in words is "two billion, six hundred forty-six million, one hundred forty-three thousand, nine hundred forty-six".