2643862142 has 16 divisors (see below), whose sum is σ = 4057655040. Its totient is φ = 1291414488.

The previous prime is 2643862099. The next prime is 2643862147. The reversal of 2643862142 is 2412683462.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2643862096 and 2643862105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643862147) 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 7 ways as a sum of consecutive naturals, for example, 25709 + ... + 77127.

It is an arithmetic number, because the mean of its divisors is an integer number (253603440).

Almost surely, 2^2643862142 is an apocalyptic number.

It is a pronic number, being equal to 51418×51419.

2643862142 is a deficient number, since it is larger than the sum of its proper divisors (1413792898).

2643862142 is a wasteful number, since it uses less digits than its factorization.

2643862142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52015.

The product of its digits is 110592, while the sum is 38.

The square root of 2643862142 is about 51418.4999975690. The cubic root of 2643862142 is about 1382.7582831641.

The spelling of 2643862142 in words is "two billion, six hundred forty-three million, eight hundred sixty-two thousand, one hundred forty-two".