1279265495 has 8 divisors (see below), whose sum is σ = 1550318400. Its totient is φ = 1013279200.

The previous prime is 1279265489. The next prime is 1279265501. The reversal of 1279265495 is 5945629721.

It is an interprime number because it is at equal distance from previous prime (1279265489) and next prime (1279265501).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1279265495 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266095 + ... + 1267104.

It is an arithmetic number, because the mean of its divisors is an integer number (193789800).

Almost surely, 2^1279265495 is an apocalyptic number.

1279265495 is a deficient number, since it is larger than the sum of its proper divisors (271052905).

1279265495 is a wasteful number, since it uses less digits than its factorization.

1279265495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533305.

The product of its digits is 1360800, while the sum is 50.

The square root of 1279265495 is about 35766.8211475384. The cubic root of 1279265495 is about 1085.5593242637.

It can be divided in two parts, 12792 and 65495, that added together give a palindrome (78287).

The spelling of 1279265495 in words is "one billion, two hundred seventy-nine million, two hundred sixty-five thousand, four hundred ninety-five".