2217900738 has 16 divisors (see below), whose sum is σ = 4441979520. Its totient is φ = 738270576.

The previous prime is 2217900703. The next prime is 2217900743. The reversal of 2217900738 is 8370097122.

It is a junction number, because it is equal to n+sod(n) for n = 2217900696 and 2217900705.

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 in 7 ways as a sum of consecutive naturals, for example, 252745 + ... + 261372.

It is an arithmetic number, because the mean of its divisors is an integer number (277623720).

Almost surely, 2^2217900738 is an apocalyptic number.

2217900738 is an abundant number, since it is smaller than the sum of its proper divisors (2224078782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217900738 is a wasteful number, since it uses less digits than its factorization.

2217900738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514841.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 2217900738 is about 47094.5935113575. The cubic root of 2217900738 is about 1304.1094295265.

The spelling of 2217900738 in words is "two billion, two hundred seventeen million, nine hundred thousand, seven hundred thirty-eight".