1265493371 has 2 divisors, whose sum is σ = 1265493372. Its totient is φ = 1265493370.

The previous prime is 1265493343. The next prime is 1265493431. The reversal of 1265493371 is 1733945621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1265493371 - 2¹⁴ = 1265476987 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1265493071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632746685 + 632746686.

It is an arithmetic number, because the mean of its divisors is an integer number (632746686).

Almost surely, 2^1265493371 is an apocalyptic number.

1265493371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265493371 is an equidigital number, since it uses as much as digits as its factorization.

1265493371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 1265493371 is about 35573.7736401411. The cubic root of 1265493371 is about 1081.6496768021.

The spelling of 1265493371 in words is "one billion, two hundred sixty-five million, four hundred ninety-three thousand, three hundred seventy-one".