1880581 has 2 divisors, whose sum is σ = 1880582. Its totient is φ = 1880580.

The previous prime is 1880573. The next prime is 1880597. The reversal of 1880581 is 1850881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1822500 + 58081 = 1350^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 1880581 - 2³ = 1880573 is a prime.

It is a super-2 number, since 2×1880581² = 7073169795122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1880521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940290 + 940291.

It is an arithmetic number, because the mean of its divisors is an integer number (940291).

2^1880581 is an apocalyptic number.

It is an amenable number.

1880581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880581 is an equidigital number, since it uses as much as digits as its factorization.

1880581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 1880581 is about 1371.3427726138. The cubic root of 1880581 is about 123.4328285686.

The spelling of 1880581 in words is "one million, eight hundred eighty thousand, five hundred eighty-one".