1284928244649 has 96 divisors (see below), whose sum is σ = 2236647168000. Its totient is φ = 726894489888.

The previous prime is 1284928244629. The next prime is 1284928244651. The reversal of 1284928244649 is 9464428294821.

1284928244649 is a `hidden beast` number, since 1 + 2 + 8 + 4 + 92 + 82 + 4 + 464 + 9 = 666.

It is not a de Polignac number, because 1284928244649 - 2⁵ = 1284928244617 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1284928244609) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66009292 + ... + 66028754.

It is an arithmetic number, because the mean of its divisors is an integer number (23298408000).

Almost surely, 2^{1284928244649} is an apocalyptic number.

It is an amenable number.

1284928244649 is a deficient number, since it is larger than the sum of its proper divisors (951718923351).

1284928244649 is a wasteful number, since it uses less digits than its factorization.

1284928244649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19984 (or 19971 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 63.

The spelling of 1284928244649 in words is "one trillion, two hundred eighty-four billion, nine hundred twenty-eight million, two hundred forty-four thousand, six hundred forty-nine".