1268330537 has 4 divisors (see below), whose sum is σ = 1297826640. Its totient is φ = 1238834436.

The previous prime is 1268330527. The next prime is 1268330587. The reversal of 1268330537 is 7350338621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7350338621 = 76519 ⋅96059.

It is a cyclic number.

It is not a de Polignac number, because 1268330537 - 2⁴ = 1268330521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1268330537.

It is not an unprimeable number, because it can be changed into a prime (1268330507) 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 in 3 ways as a sum of consecutive naturals, for example, 14747987 + ... + 14748072.

It is an arithmetic number, because the mean of its divisors is an integer number (324456660).

Almost surely, 2^1268330537 is an apocalyptic number.

It is an amenable number.

1268330537 is a deficient number, since it is larger than the sum of its proper divisors (29496103).

1268330537 is an equidigital number, since it uses as much as digits as its factorization.

1268330537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29496102.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 1268330537 is about 35613.6285289775. The cubic root of 1268330537 is about 1082.4574063498.

The spelling of 1268330537 in words is "one billion, two hundred sixty-eight million, three hundred thirty thousand, five hundred thirty-seven".