1880000869 has 2 divisors, whose sum is σ = 1880000870. Its totient is φ = 1880000868.

The previous prime is 1880000867. The next prime is 1880000897. The reversal of 1880000869 is 9680000881.

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., 1089660100 + 790340769 = 33010^2 + 28113^2 .

It is a cyclic number.

It is not a de Polignac number, because 1880000869 - 2¹ = 1880000867 is a prime.

It is a super-2 number, since 2×1880000869² = 7068806534881510322, which contains 22 as substring.

Together with 1880000867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1880000867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940000434 + 940000435.

It is an arithmetic number, because the mean of its divisors is an integer number (940000435).

Almost surely, 2^1880000869 is an apocalyptic number.

It is an amenable number.

1880000869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880000869 is an equidigital number, since it uses as much as digits as its factorization.

1880000869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1880000869 is about 43358.9767983517. The cubic root of 1880000869 is about 1234.2013487186.

The spelling of 1880000869 in words is "one billion, eight hundred eighty million, eight hundred sixty-nine", and thus it is an aban number.