1295985371 has 2 divisors, whose sum is σ = 1295985372. Its totient is φ = 1295985370.

The previous prime is 1295985367. The next prime is 1295985389. The reversal of 1295985371 is 1735895921.

It is a weak prime.

It is an emirp because it is prime and its reverse (1735895921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1295985371 - 2² = 1295985367 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295085371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647992685 + 647992686.

It is an arithmetic number, because the mean of its divisors is an integer number (647992686).

Almost surely, 2^1295985371 is an apocalyptic number.

1295985371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295985371 is an equidigital number, since it uses as much as digits as its factorization.

1295985371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 50.

The square root of 1295985371 is about 35999.7968188711. The cubic root of 1295985371 is about 1090.2682534219.

The spelling of 1295985371 in words is "one billion, two hundred ninety-five million, nine hundred eighty-five thousand, three hundred seventy-one".