2643764942 has 32 divisors (see below), whose sum is σ = 4901299200. Its totient is φ = 1041491808.

The previous prime is 2643764933. The next prime is 2643764947. The reversal of 2643764942 is 2494673462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643764947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13109 + ... + 73887.

It is an arithmetic number, because the mean of its divisors is an integer number (153165600).

Almost surely, 2^2643764942 is an apocalyptic number.

2643764942 is a deficient number, since it is larger than the sum of its proper divisors (2257534258).

2643764942 is a wasteful number, since it uses less digits than its factorization.

2643764942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61040.

The product of its digits is 1741824, while the sum is 47.

The square root of 2643764942 is about 51417.5548037827. The cubic root of 2643764942 is about 1382.7413375311.

The spelling of 2643764942 in words is "two billion, six hundred forty-three million, seven hundred sixty-four thousand, nine hundred forty-two".