1999711084 has 12 divisors (see below), whose sum is σ = 3999422224. Its totient is φ = 857019024.

The previous prime is 1999711073. The next prime is 1999711093. The reversal of 1999711084 is 4801179991.

1999711084 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 35709099 + ... + 35709154.

Almost surely, 2^1999711084 is an apocalyptic number.

1999711084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1999711084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1999711084 is a wasteful number, since it uses less digits than its factorization.

1999711084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71418264 (or 71418262 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 49.

The square root of 1999711084 is about 44718.1292542521. The cubic root of 1999711084 is about 1259.8603784149.

The spelling of 1999711084 in words is "one billion, nine hundred ninety-nine million, seven hundred eleven thousand, eighty-four".