1275494863 has 8 divisors (see below), whose sum is σ = 1297990800. Its totient is φ = 1253028288.

The previous prime is 1275494839. The next prime is 1275494893. The reversal of 1275494863 is 3684945721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1275494863 - 2⁹ = 1275494351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275494893) 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 7 ways as a sum of consecutive naturals, for example, 91995 + ... + 104947.

It is an arithmetic number, because the mean of its divisors is an integer number (162248850).

Almost surely, 2^1275494863 is an apocalyptic number.

1275494863 is a deficient number, since it is larger than the sum of its proper divisors (22495937).

1275494863 is a wasteful number, since it uses less digits than its factorization.

1275494863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14681.

The product of its digits is 1451520, while the sum is 49.

The square root of 1275494863 is about 35714.0709384971. The cubic root of 1275494863 is about 1084.4917134745.

The spelling of 1275494863 in words is "one billion, two hundred seventy-five million, four hundred ninety-four thousand, eight hundred sixty-three".