1999814893 has 16 divisors (see below), whose sum is σ = 2070794880. Its totient is φ = 1930003200.

The previous prime is 1999814827. The next prime is 1999814933. The reversal of 1999814893 is 3984189991.

It is a cyclic number.

It is not a de Polignac number, because 1999814893 - 2¹³ = 1999806701 is a prime.

It is a super-3 number, since 3×1999814893³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999814093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2465458 + ... + 2466268.

It is an arithmetic number, because the mean of its divisors is an integer number (129424680).

Almost surely, 2^1999814893 is an apocalyptic number.

It is an amenable number.

1999814893 is a deficient number, since it is larger than the sum of its proper divisors (70979987).

1999814893 is a wasteful number, since it uses less digits than its factorization.

1999814893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its digits is 5038848, while the sum is 61.

The square root of 1999814893 is about 44719.2899429318. The cubic root of 1999814893 is about 1259.8821786613.

The spelling of 1999814893 in words is "one billion, nine hundred ninety-nine million, eight hundred fourteen thousand, eight hundred ninety-three".