2199693861 has 8 divisors (see below), whose sum is σ = 3258805760. Its totient is φ = 1466462556.

The previous prime is 2199693857. The next prime is 2199693913. The reversal of 2199693861 is 1683969912.

It is not a de Polignac number, because 2199693861 - 2² = 2199693857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2199693798 and 2199693807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199697861) by changing a digit.

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, 40735045 + ... + 40735098.

It is an arithmetic number, because the mean of its divisors is an integer number (407350720).

Almost surely, 2^2199693861 is an apocalyptic number.

It is an amenable number.

2199693861 is a deficient number, since it is larger than the sum of its proper divisors (1059111899).

2199693861 is an equidigital number, since it uses as much as digits as its factorization.

2199693861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81470152 (or 81470146 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 2199693861 is about 46900.8940319905. The cubic root of 2199693861 is about 1300.5311165128.

The spelling of 2199693861 in words is "two billion, one hundred ninety-nine million, six hundred ninety-three thousand, eight hundred sixty-one".