1319148265 has 4 divisors (see below), whose sum is σ = 1582977924. Its totient is φ = 1055318608.

The previous prime is 1319148251. The next prime is 1319148289. The reversal of 1319148265 is 5628419131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5628419131 = 983 ⋅5725757.

It can be written as a sum of positive squares in 2 ways, for example, as 753612304 + 565535961 = 27452^2 + 23781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319148265 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131914822 + ... + 131914831.

It is an arithmetic number, because the mean of its divisors is an integer number (395744481).

Almost surely, 2^1319148265 is an apocalyptic number.

It is an amenable number.

1319148265 is a deficient number, since it is larger than the sum of its proper divisors (263829659).

1319148265 is an equidigital number, since it uses as much as digits as its factorization.

1319148265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263829658.

The product of its digits is 51840, while the sum is 40.

The square root of 1319148265 is about 36320.0807405490. The cubic root of 1319148265 is about 1096.7253202411.

The spelling of 1319148265 in words is "one billion, three hundred nineteen million, one hundred forty-eight thousand, two hundred sixty-five".