2063639218 has 4 divisors (see below), whose sum is σ = 3095458830. Its totient is φ = 1031819608.

The previous prime is 2063639203. The next prime is 2063639239. The reversal of 2063639218 is 8129363602.

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., 2054536929 + 9102289 = 45327^2 + 3017^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515909803 + ... + 515909806.

Almost surely, 2^2063639218 is an apocalyptic number.

2063639218 is a deficient number, since it is larger than the sum of its proper divisors (1031819612).

2063639218 is a wasteful number, since it uses less digits than its factorization.

2063639218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031819611.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 2063639218 is about 45427.2959573867. The cubic root of 2063639218 is about 1273.1451625822.

The spelling of 2063639218 in words is "two billion, sixty-three million, six hundred thirty-nine thousand, two hundred eighteen".