1999162944 has 231 divisors, whose sum is σ = 6220570363. Its totient is φ = 637414272.

The previous prime is 1999162933. The next prime is 1999162987. The reversal of 1999162944 is 4492619991.

The square root of 1999162944 is 44712.

It is a perfect power (a square), and thus also a powerful number.

1999162944 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 1 + 629 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 86920117 + ... + 86920139.

Almost surely, 2^1999162944 is an apocalyptic number.

1999162944 is the 44712-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999162944

1999162944 is an abundant number, since it is smaller than the sum of its proper divisors (4221407419).

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

1999162944 is an frugal number, since it uses more digits than its factorization.

1999162944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 28 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The cubic root of 1999162944 is about 1259.7452546218.

The spelling of 1999162944 in words is "one billion, nine hundred ninety-nine million, one hundred sixty-two thousand, nine hundred forty-four".