1318726037 has 2 divisors, whose sum is σ = 1318726038. Its totient is φ = 1318726036.

The previous prime is 1318726033. The next prime is 1318726043. The reversal of 1318726037 is 7306278131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1242844516 + 75881521 = 35254^2 + 8711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318726037 - 2² = 1318726033 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318726033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659363018 + 659363019.

It is an arithmetic number, because the mean of its divisors is an integer number (659363019).

Almost surely, 2^1318726037 is an apocalyptic number.

It is an amenable number.

1318726037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318726037 is an equidigital number, since it uses as much as digits as its factorization.

1318726037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1318726037 is about 36314.2676781455. The cubic root of 1318726037 is about 1096.6082958537.

The spelling of 1318726037 in words is "one billion, three hundred eighteen million, seven hundred twenty-six thousand, thirty-seven".