2199931693 has 4 divisors (see below), whose sum is σ = 2200044220. Its totient is φ = 2199819168.

The previous prime is 2199931691. The next prime is 2199931703. The reversal of 2199931693 is 3961399912.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1392633124 + 807298569 = 37318^2 + 28413^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199931693 - 2¹ = 2199931691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2199931693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199931691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18480 + ... + 68857.

It is an arithmetic number, because the mean of its divisors is an integer number (550011055).

Almost surely, 2^2199931693 is an apocalyptic number.

It is an amenable number.

2199931693 is a deficient number, since it is larger than the sum of its proper divisors (112527).

2199931693 is an equidigital number, since it uses as much as digits as its factorization.

2199931693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112526.

The product of its digits is 708588, while the sum is 52.

The square root of 2199931693 is about 46903.4294375155. The cubic root of 2199931693 is about 1300.5779861818.

The spelling of 2199931693 in words is "two billion, one hundred ninety-nine million, nine hundred thirty-one thousand, six hundred ninety-three".