1980850 has 24 divisors (see below), whose sum is σ = 3721860. Its totient is φ = 784320.

The previous prime is 1980821. The next prime is 1980859. The reversal of 1980850 is 580891.

It can be written as a sum of positive squares in 6 ways, for example, as 1640961 + 339889 = 1281^2 + 583^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1980859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8536 + ... + 8764.

2^1980850 is an apocalyptic number.

1980850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980850 is a deficient number, since it is larger than the sum of its proper divisors (1741010).

1980850 is a wasteful number, since it uses less digits than its factorization.

1980850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1980850 is about 1407.4267298869. The cubic root of 1980850 is about 125.5886898683.

The spelling of 1980850 in words is "one million, nine hundred eighty thousand, eight hundred fifty".