1318463837 has 2 divisors, whose sum is σ = 1318463838. Its totient is φ = 1318463836.

The previous prime is 1318463833. The next prime is 1318463851. The reversal of 1318463837 is 7383648131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008316516 + 310147321 = 31754^2 + 17611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318463837 - 2² = 1318463833 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318463833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659231918 + 659231919.

It is an arithmetic number, because the mean of its divisors is an integer number (659231919).

Almost surely, 2^1318463837 is an apocalyptic number.

It is an amenable number.

1318463837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318463837 is an equidigital number, since it uses as much as digits as its factorization.

1318463837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 1318463837 is about 36310.6573473960. The cubic root of 1318463837 is about 1096.5356121307.

The spelling of 1318463837 in words is "one billion, three hundred eighteen million, four hundred sixty-three thousand, eight hundred thirty-seven".