2642363818 has 16 divisors (see below), whose sum is σ = 4100430600. Its totient is φ = 1276192000.

The previous prime is 2642363683. The next prime is 2642363819. The reversal of 2642363818 is 8183632462.

It can be written as a sum of positive squares in 4 ways, for example, as 2218127409 + 424236409 = 47097^2 + 20597^2 .

It is not an unprimeable number, because it can be changed into a prime (2642363819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 151243 + ... + 167806.

Almost surely, 2^2642363818 is an apocalyptic number.

2642363818 is a deficient number, since it is larger than the sum of its proper divisors (1458066782).

2642363818 is a wasteful number, since it uses less digits than its factorization.

2642363818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319193.

The product of its digits is 331776, while the sum is 43.

The square root of 2642363818 is about 51403.9280405690. The cubic root of 2642363818 is about 1382.4970225142.

The spelling of 2642363818 in words is "two billion, six hundred forty-two million, three hundred sixty-three thousand, eight hundred eighteen".