1880129 has 2 divisors, whose sum is σ = 1880130. Its totient is φ = 1880128.

The previous prime is 1880117. The next prime is 1880159. The reversal of 1880129 is 9210881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1495729 + 384400 = 1223^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1880129 - 2⁸ = 1879873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1880159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940064 + 940065.

It is an arithmetic number, because the mean of its divisors is an integer number (940065).

2^1880129 is an apocalyptic number.

It is an amenable number.

1880129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880129 is an equidigital number, since it uses as much as digits as its factorization.

1880129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1880129 is about 1371.1779607330. The cubic root of 1880129 is about 123.4229386979.

The spelling of 1880129 in words is "one million, eight hundred eighty thousand, one hundred twenty-nine".