2199966738 has 16 divisors (see below), whose sum is σ = 4551655680. Its totient is φ = 708035216.

The previous prime is 2199966733. The next prime is 2199966751. The reversal of 2199966738 is 8376699912.

It is not an unprimeable number, because it can be changed into a prime (2199966733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6321570 + ... + 6321917.

It is an arithmetic number, because the mean of its divisors is an integer number (284478480).

Almost surely, 2^2199966738 is an apocalyptic number.

2199966738 is an abundant number, since it is smaller than the sum of its proper divisors (2351688942).

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

2199966738 is a wasteful number, since it uses less digits than its factorization.

2199966738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643521.

The product of its digits is 8817984, while the sum is 60.

The square root of 2199966738 is about 46903.8030227827. The cubic root of 2199966738 is about 1300.5848922316.

The spelling of 2199966738 in words is "two billion, one hundred ninety-nine million, nine hundred sixty-six thousand, seven hundred thirty-eight".