1292875289 has 2 divisors, whose sum is σ = 1292875290. Its totient is φ = 1292875288.

The previous prime is 1292875277. The next prime is 1292875291. The reversal of 1292875289 is 9825782921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 794112400 + 498762889 = 28180^2 + 22333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292875289 - 2⁸ = 1292875033 is a prime.

Together with 1292875291, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1292875289.

It is not a weakly prime, because it can be changed into another prime (1292875219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646437644 + 646437645.

It is an arithmetic number, because the mean of its divisors is an integer number (646437645).

Almost surely, 2^1292875289 is an apocalyptic number.

It is an amenable number.

1292875289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292875289 is an equidigital number, since it uses as much as digits as its factorization.

1292875289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 53.

The square root of 1292875289 is about 35956.5750454628. The cubic root of 1292875289 is about 1089.3954195715.

The spelling of 1292875289 in words is "one billion, two hundred ninety-two million, eight hundred seventy-five thousand, two hundred eighty-nine".