1980994152 has 32 divisors (see below), whose sum is σ = 4953751200. Its totient is φ = 660162624.

The previous prime is 1980994123. The next prime is 1980994189. The reversal of 1980994152 is 2514990891.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116583 + ... + 132489.

It is an arithmetic number, because the mean of its divisors is an integer number (154804725).

Almost surely, 2^1980994152 is an apocalyptic number.

1980994152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980994152 is an abundant number, since it is smaller than the sum of its proper divisors (2972757048).

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

1980994152 is a wasteful number, since it uses less digits than its factorization.

1980994152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21105 (or 21101 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 1980994152 is about 44508.3604730617. The cubic root of 1980994152 is about 1255.9173627457.

The spelling of 1980994152 in words is "one billion, nine hundred eighty million, nine hundred ninety-four thousand, one hundred fifty-two".