1989480850 has 36 divisors (see below), whose sum is σ = 4304592234. Its totient is φ = 682106880.

The previous prime is 1989480839. The next prime is 1989480953. The reversal of 1989480850 is 580849891.

It can be written as a sum of positive squares in 3 ways, for example, as 1286011321 + 703469529 = 35861^2 + 26523^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 403567 + ... + 408466.

Almost surely, 2^1989480850 is an apocalyptic number.

1989480850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1989480850 is an abundant number, since it is smaller than the sum of its proper divisors (2315111384).

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

1989480850 is a wasteful number, since it uses less digits than its factorization.

1989480850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812059 (or 812047 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 1989480850 is about 44603.5968280586. The cubic root of 1989480850 is about 1257.7082828586.

The spelling of 1989480850 in words is "one billion, nine hundred eighty-nine million, four hundred eighty thousand, eight hundred fifty".