Search a number
-
+
1880881 is a prime number
BaseRepresentation
bin111001011001100110001
310112120002021
413023030301
5440142011
6104151441
721662422
oct7131461
93476067
101880881
111075152
12768581
1350b162
1436d649
15272471
hex1cb331

1880881 has 2 divisors, whose sum is σ = 1880882. Its totient is φ = 1880880.

The previous prime is 1880869. The next prime is 1880887.

1880881 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 462400 = 1191^2 + 680^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1880881 - 25 = 1880849 is a prime.

It is a super-2 number, since 2×18808812 = 7075426672322, which contains 22 as substring.

1880881 is a strobogrammatic number because it is the same when read upside-down.

It is not a weakly prime, because it can be changed into another prime (1880887) 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, 940440 + 940441.

It is an arithmetic number, because the mean of its divisors is an integer number (940441).

21880881 is an apocalyptic number.

It is an amenable number.

1880881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880881 is an equidigital number, since it uses as much as digits as its factorization.

1880881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 1880881 is about 1371.4521500949. The cubic root of 1880881 is about 123.4393917672.

The spelling of 1880881 in words is "one million, eight hundred eighty thousand, eight hundred eighty-one".