1265338471 has 2 divisors, whose sum is σ = 1265338472. Its totient is φ = 1265338470.

The previous prime is 1265338457. The next prime is 1265338489. The reversal of 1265338471 is 1748335621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1265338471 is a prime.

It is a super-3 number, since 3×1265338471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265333471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632669235 + 632669236.

It is an arithmetic number, because the mean of its divisors is an integer number (632669236).

Almost surely, 2^1265338471 is an apocalyptic number.

1265338471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265338471 is an equidigital number, since it uses as much as digits as its factorization.

1265338471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 1265338471 is about 35571.5964078083. The cubic root of 1265338471 is about 1081.6055426656.

The spelling of 1265338471 in words is "one billion, two hundred sixty-five million, three hundred thirty-eight thousand, four hundred seventy-one".