1799981222 has 16 divisors (see below), whose sum is σ = 3007927440. Its totient is φ = 802113312.

The previous prime is 1799981191. The next prime is 1799981299. The reversal of 1799981222 is 2221899971.

It is a super-2 number, since 2×1799981222² = 6479864799105226568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192868 + ... + 1194375.

It is an arithmetic number, because the mean of its divisors is an integer number (187995465).

Almost surely, 2^1799981222 is an apocalyptic number.

1799981222 is a deficient number, since it is larger than the sum of its proper divisors (1207946218).

1799981222 is a wasteful number, since it uses less digits than its factorization.

1799981222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387287.

The product of its digits is 326592, while the sum is 50.

The square root of 1799981222 is about 42426.1855697634. The cubic root of 1799981222 is about 1216.4361690411.

The spelling of 1799981222 in words is "one billion, seven hundred ninety-nine million, nine hundred eighty-one thousand, two hundred twenty-two".