1996989120 has 672 divisors, whose sum is σ = 8443569600. Its totient is φ = 442810368.

The previous prime is 1996989083. The next prime is 1996989161. The reversal of 1996989120 is 219896991.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22438036 + ... + 22438124.

Almost surely, 2^1996989120 is an apocalyptic number.

1996989120 is a gapful number since it is divisible by the number (10) 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 1996989120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4221784800).

1996989120 is an abundant number, since it is smaller than the sum of its proper divisors (6446580480).

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

1996989120 is a wasteful number, since it uses less digits than its factorization.

1996989120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 159 counting only the distinct ones).

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

The square root of 1996989120 is about 44687.6842094105. The cubic root of 1996989120 is about 1259.2884871784.

The spelling of 1996989120 in words is "one billion, nine hundred ninety-six million, nine hundred eighty-nine thousand, one hundred twenty".