1219802199 has 64 divisors (see below), whose sum is σ = 2131599360. Its totient is φ = 602017920.

The previous prime is 1219802137. The next prime is 1219802203. The reversal of 1219802199 is 9912089121.

It is not a de Polignac number, because 1219802199 - 2¹² = 1219798103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1219802199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219802099) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 365862 + ... + 369180.

It is an arithmetic number, because the mean of its divisors is an integer number (33306240).

Almost surely, 2^1219802199 is an apocalyptic number.

1219802199 is a deficient number, since it is larger than the sum of its proper divisors (911797161).

1219802199 is a wasteful number, since it uses less digits than its factorization.

1219802199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 1219802199 is about 34925.6667652888. Note that the first 3 decimals coincide. The cubic root of 1219802199 is about 1068.4719794186.

The spelling of 1219802199 in words is "one billion, two hundred nineteen million, eight hundred two thousand, one hundred ninety-nine".