1276948973 has 2 divisors, whose sum is σ = 1276948974. Its totient is φ = 1276948972.

The previous prime is 1276948963. The next prime is 1276948991. The reversal of 1276948973 is 3798496721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274347204 + 2601769 = 35698^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276948973 - 2³⁰ = 203207149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276948963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638474486 + 638474487.

It is an arithmetic number, because the mean of its divisors is an integer number (638474487).

Almost surely, 2^1276948973 is an apocalyptic number.

It is an amenable number.

1276948973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276948973 is an equidigital number, since it uses as much as digits as its factorization.

1276948973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 1276948973 is about 35734.4228021106. The cubic root of 1276948973 is about 1084.9036768107.

The spelling of 1276948973 in words is "one billion, two hundred seventy-six million, nine hundred forty-eight thousand, nine hundred seventy-three".