1999068192 has 144 divisors (see below), whose sum is σ = 6224662080. Its totient is φ = 603532800.

The previous prime is 1999068173. The next prime is 1999068193. The reversal of 1999068192 is 2918609991.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1999068192² = 7992547272532297728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1999068193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984234 + ... + 986262.

It is an arithmetic number, because the mean of its divisors is an integer number (43226820).

Almost surely, 2^1999068192 is an apocalyptic number.

1999068192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999068192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3112331040).

1999068192 is an abundant number, since it is smaller than the sum of its proper divisors (4225593888).

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

1999068192 is a wasteful number, since it uses less digits than its factorization.

1999068192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The square root of 1999068192 is about 44710.9404061243. The cubic root of 1999068192 is about 1259.7253520807.

The spelling of 1999068192 in words is "one billion, nine hundred ninety-nine million, sixty-eight thousand, one hundred ninety-two".