1183923887 has 2 divisors, whose sum is σ = 1183923888. Its totient is φ = 1183923886.

The previous prime is 1183923857. The next prime is 1183923889. The reversal of 1183923887 is 7883293811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1183923887 - 2⁶ = 1183923823 is a prime.

Together with 1183923889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1183923889) 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, 591961943 + 591961944.

It is an arithmetic number, because the mean of its divisors is an integer number (591961944).

Almost surely, 2^1183923887 is an apocalyptic number.

1183923887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1183923887 is an equidigital number, since it uses as much as digits as its factorization.

1183923887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 1183923887 is about 34408.1950558294. The cubic root of 1183923887 is about 1057.8918248397.

The spelling of 1183923887 in words is "one billion, one hundred eighty-three million, nine hundred twenty-three thousand, eight hundred eighty-seven".