1868882149 has 2 divisors, whose sum is σ = 1868882150. Its totient is φ = 1868882148.

The previous prime is 1868882107. The next prime is 1868882189. The reversal of 1868882149 is 9412888681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1853905249 + 14976900 = 43057^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868882149 - 2⁷ = 1868882021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1868882149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868882189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934441074 + 934441075.

It is an arithmetic number, because the mean of its divisors is an integer number (934441075).

Almost surely, 2^1868882149 is an apocalyptic number.

It is an amenable number.

1868882149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868882149 is an equidigital number, since it uses as much as digits as its factorization.

1868882149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1769472, while the sum is 55.

The square root of 1868882149 is about 43230.5696122547. The cubic root of 1868882149 is about 1231.7634275913.

The spelling of 1868882149 in words is "one billion, eight hundred sixty-eight million, eight hundred eighty-two thousand, one hundred forty-nine".