1282749471 has 12 divisors (see below), whose sum is σ = 1857048648. Its totient is φ = 853233264.

The previous prime is 1282749463. The next prime is 1282749487. The reversal of 1282749471 is 1749472821.

1282749471 is a `hidden beast` number, since 12 + 82 + 7 + 494 + 71 = 666.

It is not a de Polignac number, because 1282749471 - 2³ = 1282749463 is a prime.

It is a super-3 number, since 3×1282749471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282749421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156880 + ... + 164853.

It is an arithmetic number, because the mean of its divisors is an integer number (154754054).

Almost surely, 2^1282749471 is an apocalyptic number.

1282749471 is a deficient number, since it is larger than the sum of its proper divisors (574299177).

1282749471 is a wasteful number, since it uses less digits than its factorization.

1282749471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322182 (or 322179 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1282749471 is about 35815.4920530209. The cubic root of 1282749471 is about 1086.5439086344.

The spelling of 1282749471 in words is "one billion, two hundred eighty-two million, seven hundred forty-nine thousand, four hundred seventy-one".