1944999216 has 60 divisors (see below), whose sum is σ = 5644911272. Its totient is φ = 648331776.

The previous prime is 1944999187. The next prime is 1944999227. The reversal of 1944999216 is 6129994491.

It is a super-2 number, since 2×1944999216² = 7566043900481229312, which contains 22 as substring.

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.

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, 246241 + ... + 254016.

Almost surely, 2^1944999216 is an apocalyptic number.

1944999216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1944999216 is an abundant number, since it is smaller than the sum of its proper divisors (3699912056).

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

1944999216 is an equidigital number, since it uses as much as digits as its factorization.

1944999216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500280 (or 500262 counting only the distinct ones).

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

The square root of 1944999216 is about 44102.1452539443. The cubic root of 1944999216 is about 1248.2640898220.

The spelling of 1944999216 in words is "one billion, nine hundred forty-four million, nine hundred ninety-nine thousand, two hundred sixteen".