1282115664 has 30 divisors (see below), whose sum is σ = 3588143546. Its totient is φ = 427371840.

The previous prime is 1282115663. The next prime is 1282115671. The reversal of 1282115664 is 4665112821.

It is a happy number.

1282115664 is a `hidden beast` number, since 1 + 2 + 82 + 11 + 566 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 767733264 + 514382400 = 27708^2 + 22680^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282115663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4451647 + ... + 4451934.

Almost surely, 2^1282115664 is an apocalyptic number.

It is an amenable number.

1282115664 is an abundant number, since it is smaller than the sum of its proper divisors (2306027882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1282115664 is a wasteful number, since it uses less digits than its factorization.

1282115664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8903595 (or 8903586 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1282115664 is about 35806.6427356713. The cubic root of 1282115664 is about 1086.3649252335.

The spelling of 1282115664 in words is "one billion, two hundred eighty-two million, one hundred fifteen thousand, six hundred sixty-four".