1318827077 has 2 divisors, whose sum is σ = 1318827078. Its totient is φ = 1318827076.

The previous prime is 1318827073. The next prime is 1318827091. The reversal of 1318827077 is 7707288131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1004509636 + 314317441 = 31694^2 + 17729^2 .

It is an emirp because it is prime and its reverse (7707288131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1318827077 - 2² = 1318827073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318827073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659413538 + 659413539.

It is an arithmetic number, because the mean of its divisors is an integer number (659413539).

Almost surely, 2^1318827077 is an apocalyptic number.

It is an amenable number.

1318827077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318827077 is an equidigital number, since it uses as much as digits as its factorization.

1318827077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 1318827077 is about 36315.6588402303. The cubic root of 1318827077 is about 1096.6363022956.

The spelling of 1318827077 in words is "one billion, three hundred eighteen million, eight hundred twenty-seven thousand, seventy-seven".