2642385946 has 4 divisors (see below), whose sum is σ = 3963578922. Its totient is φ = 1321192972.

The previous prime is 2642385931. The next prime is 2642385997. The reversal of 2642385946 is 6495832462.

It is a happy number.

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., 2110391721 + 531994225 = 45939^2 + 23065^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2642385946.

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 as a sum of consecutive naturals, namely, 660596485 + ... + 660596488.

Almost surely, 2^2642385946 is an apocalyptic number.

2642385946 is a deficient number, since it is larger than the sum of its proper divisors (1321192976).

2642385946 is a wasteful number, since it uses less digits than its factorization.

2642385946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321192975.

The product of its digits is 2488320, while the sum is 49.

The square root of 2642385946 is about 51404.1432765881. The cubic root of 2642385946 is about 1382.5008816609.

The spelling of 2642385946 in words is "two billion, six hundred forty-two million, three hundred eighty-five thousand, nine hundred forty-six".