1980113 has 2 divisors, whose sum is σ = 1980114. Its totient is φ = 1980112.

The previous prime is 1980103. The next prime is 1980169. The reversal of 1980113 is 3110891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1555009 + 425104 = 1247^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980113 - 2¹² = 1976017 is a prime.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (1980103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990056 + 990057.

It is an arithmetic number, because the mean of its divisors is an integer number (990057).

2^1980113 is an apocalyptic number.

It is an amenable number.

1980113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980113 is an equidigital number, since it uses as much as digits as its factorization.

1980113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1980113 is about 1407.1648801757. The cubic root of 1980113 is about 125.5731123223.

The spelling of 1980113 in words is "one million, nine hundred eighty thousand, one hundred thirteen".