1319868899 has 16 divisors (see below), whose sum is σ = 1429757568. Its totient is φ = 1213658112.

The previous prime is 1319868863. The next prime is 1319868917. The reversal of 1319868899 is 9988689131.

It is a Cunningham number, because it is equal to 36330²-1.

It is a cyclic number.

It is not a de Polignac number, because 1319868899 - 2¹² = 1319864803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319868859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616559 + ... + 618695.

It is an arithmetic number, because the mean of its divisors is an integer number (89359848).

Almost surely, 2^1319868899 is an apocalyptic number.

1319868899 is a deficient number, since it is larger than the sum of its proper divisors (109888669).

1319868899 is a wasteful number, since it uses less digits than its factorization.

1319868899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974.

The product of its digits is 6718464, while the sum is 62.

The square root of 1319868899 is about 36329.9999862373. Note that the first 4 decimals coincide. The cubic root of 1319868899 is about 1096.9249929395.

The spelling of 1319868899 in words is "one billion, three hundred nineteen million, eight hundred sixty-eight thousand, eight hundred ninety-nine".