1880521 has 2 divisors, whose sum is σ = 1880522. Its totient is φ = 1880520.

The previous prime is 1880513. The next prime is 1880537. The reversal of 1880521 is 1250881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 525625 = 1164^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1880521 - 2³ = 1880513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1880551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940260 + 940261.

It is an arithmetic number, because the mean of its divisors is an integer number (940261).

2^1880521 is an apocalyptic number.

It is an amenable number.

1880521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880521 is an equidigital number, since it uses as much as digits as its factorization.

1880521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1880521 is about 1371.3208960706. The cubic root of 1880521 is about 123.4315158451.

It can be divided in two parts, 1880 and 521, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1880521 in words is "one million, eight hundred eighty thousand, five hundred twenty-one".