1999727316 has 36 divisors (see below), whose sum is σ = 5118859200. Its totient is φ = 658137168.

The previous prime is 1999727309. The next prime is 1999727321. The reversal of 1999727316 is 6137279991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 348726 + ... + 354413.

Almost surely, 2^1999727316 is an apocalyptic number.

It is an amenable number.

1999727316 is an abundant number, since it is smaller than the sum of its proper divisors (3119131884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1999727316 is a wasteful number, since it uses less digits than its factorization.

1999727316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703228 (or 703223 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 1999727316 is about 44718.3107462704. The cubic root of 1999727316 is about 1259.8637872404.

The spelling of 1999727316 in words is "one billion, nine hundred ninety-nine million, seven hundred twenty-seven thousand, three hundred sixteen".