1999159344 has 360 divisors, whose sum is σ = 7171478496. Its totient is φ = 505958400.

The previous prime is 1999159307. The next prime is 1999159369. The reversal of 1999159344 is 4439519991.

It is a happy number.

1999159344 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 1 + 593 + 44 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32773074 + ... + 32773134.

Almost surely, 2^1999159344 is an apocalyptic number.

1999159344 is a gapful number since it is divisible by the number (14) 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 1999159344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3585739248).

1999159344 is an abundant number, since it is smaller than the sum of its proper divisors (5172319152).

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

1999159344 is a wasteful number, since it uses less digits than its factorization.

1999159344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 127 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 1999159344 is about 44711.9597423329. The cubic root of 1999159344 is about 1259.7444984577.

The spelling of 1999159344 in words is "one billion, nine hundred ninety-nine million, one hundred fifty-nine thousand, three hundred forty-four".