1281458471 has 2 divisors, whose sum is σ = 1281458472. Its totient is φ = 1281458470.

The previous prime is 1281458441. The next prime is 1281458473. The reversal of 1281458471 is 1748541821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1281458471 - 2²² = 1277264167 is a prime.

It is a super-3 number, since 3×1281458471³ (a number of 28 digits) contains 333 as substring.

Together with 1281458473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1281458473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640729235 + 640729236.

It is an arithmetic number, because the mean of its divisors is an integer number (640729236).

Almost surely, 2^1281458471 is an apocalyptic number.

1281458471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1281458471 is an equidigital number, since it uses as much as digits as its factorization.

1281458471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71680, while the sum is 41.

The square root of 1281458471 is about 35797.4645889901. The cubic root of 1281458471 is about 1086.1792754605.

The spelling of 1281458471 in words is "one billion, two hundred eighty-one million, four hundred fifty-eight thousand, four hundred seventy-one".