1868323049 has 2 divisors, whose sum is σ = 1868323050. Its totient is φ = 1868323048.

The previous prime is 1868323027. The next prime is 1868323063. The reversal of 1868323049 is 9403238681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1315367824 + 552955225 = 36268^2 + 23515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868323049 - 2²⁴ = 1851545833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1868323019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934161524 + 934161525.

It is an arithmetic number, because the mean of its divisors is an integer number (934161525).

Almost surely, 2^1868323049 is an apocalyptic number.

It is an amenable number.

1868323049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868323049 is an equidigital number, since it uses as much as digits as its factorization.

1868323049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1868323049 is about 43224.1026396153. The cubic root of 1868323049 is about 1231.6405827453.

The spelling of 1868323049 in words is "one billion, eight hundred sixty-eight million, three hundred twenty-three thousand, forty-nine".