1275840953 has 2 divisors, whose sum is σ = 1275840954. Its totient is φ = 1275840952.

The previous prime is 1275840949. The next prime is 1275840971. The reversal of 1275840953 is 3590485721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1275061264 + 779689 = 35708^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275840953 - 2² = 1275840949 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275840353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637920476 + 637920477.

It is an arithmetic number, because the mean of its divisors is an integer number (637920477).

Almost surely, 2^1275840953 is an apocalyptic number.

It is an amenable number.

1275840953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275840953 is an equidigital number, since it uses as much as digits as its factorization.

1275840953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1275840953 is about 35718.9158990023. The cubic root of 1275840953 is about 1084.5897924779.

The spelling of 1275840953 in words is "one billion, two hundred seventy-five million, eight hundred forty thousand, nine hundred fifty-three".