1318488077 has 2 divisors, whose sum is σ = 1318488078. Its totient is φ = 1318488076.

The previous prime is 1318488043. The next prime is 1318488079. The reversal of 1318488077 is 7708848131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883932361 + 434555716 = 29731^2 + 20846^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318488077 - 2⁶ = 1318488013 is a prime.

Together with 1318488079, 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 (1318488079) 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, 659244038 + 659244039.

It is an arithmetic number, because the mean of its divisors is an integer number (659244039).

Almost surely, 2^1318488077 is an apocalyptic number.

It is an amenable number.

1318488077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318488077 is an equidigital number, since it uses as much as digits as its factorization.

1318488077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 47.

The square root of 1318488077 is about 36310.9911321627. The cubic root of 1318488077 is about 1096.5423320370.

The spelling of 1318488077 in words is "one billion, three hundred eighteen million, four hundred eighty-eight thousand, seventy-seven".