1980394 has 16 divisors (see below), whose sum is σ = 3255840. Its totient is φ = 897840.

The previous prime is 1980383. The next prime is 1980397. The reversal of 1980394 is 4930891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (203490).

2^1980394 is an apocalyptic number.

1980394 is a deficient number, since it is larger than the sum of its proper divisors (1275446).

1980394 is a wasteful number, since it uses less digits than its factorization.

1980394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1980394 is about 1407.2647227867. The cubic root of 1980394 is about 125.5790521138.

The spelling of 1980394 in words is "one million, nine hundred eighty thousand, three hundred ninety-four".