2199681086 has 4 divisors (see below), whose sum is σ = 3299521632. Its totient is φ = 1099840542.

The previous prime is 2199681079. The next prime is 2199681097. The reversal of 2199681086 is 6801869912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2199681086² = 9677193760212278792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549920270 + ... + 549920273.

It is an arithmetic number, because the mean of its divisors is an integer number (824880408).

Almost surely, 2^2199681086 is an apocalyptic number.

2199681086 is a deficient number, since it is larger than the sum of its proper divisors (1099840546).

2199681086 is a wasteful number, since it uses less digits than its factorization.

2199681086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099840545.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 2199681086 is about 46900.7578403590. The cubic root of 2199681086 is about 1300.5285988416.

The spelling of 2199681086 in words is "two billion, one hundred ninety-nine million, six hundred eighty-one thousand, eighty-six".