1980318 has 8 divisors (see below), whose sum is σ = 3960648. Its totient is φ = 660104.

The previous prime is 1980317. The next prime is 1980337. The reversal of 1980318 is 8130891.

It is a sphenic number, since it is the product of 3 distinct primes.

1980318 is an admirable number.

It is a super-2 number, since 2×1980318² = 7843318762248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165021 + ... + 165032.

It is an arithmetic number, because the mean of its divisors is an integer number (495081).

2^1980318 is an apocalyptic number.

1980318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1980318 is a wasteful number, since it uses less digits than its factorization.

1980318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330058.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1980318 is about 1407.2377197901. The cubic root of 1980318 is about 125.5774456776.

The spelling of 1980318 in words is "one million, nine hundred eighty thousand, three hundred eighteen".