2199861623 has 8 divisors (see below), whose sum is σ = 2206993728. Its totient is φ = 2192740704.

The previous prime is 2199861617. The next prime is 2199861701. The reversal of 2199861623 is 3261689912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2199861623 - 2⁴ = 2199861607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199861823) 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, 559661 + ... + 563577.

It is an arithmetic number, because the mean of its divisors is an integer number (275874216).

Almost surely, 2^2199861623 is an apocalyptic number.

2199861623 is a deficient number, since it is larger than the sum of its proper divisors (7132105).

2199861623 is a wasteful number, since it uses less digits than its factorization.

2199861623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5593.

The product of its digits is 279936, while the sum is 47.

The square root of 2199861623 is about 46902.6824712617. The cubic root of 2199861623 is about 1300.5641778035.

The spelling of 2199861623 in words is "two billion, one hundred ninety-nine million, eight hundred sixty-one thousand, six hundred twenty-three".