2138170199 has 4 divisors (see below), whose sum is σ = 2332549320. Its totient is φ = 1943791080.

The previous prime is 2138170163. The next prime is 2138170211. The reversal of 2138170199 is 9910718312.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2138170199 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 (2138170499) 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, 97189544 + ... + 97189565.

It is an arithmetic number, because the mean of its divisors is an integer number (583137330).

Almost surely, 2^2138170199 is an apocalyptic number.

2138170199 is a deficient number, since it is larger than the sum of its proper divisors (194379121).

2138170199 is a wasteful number, since it uses less digits than its factorization.

2138170199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194379120.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 2138170199 is about 46240.3524964938. The cubic root of 2138170199 is about 1288.2913497946.

The spelling of 2138170199 in words is "two billion, one hundred thirty-eight million, one hundred seventy thousand, one hundred ninety-nine".