1287786468 has 24 divisors (see below), whose sum is σ = 3135480768. Its totient is φ = 410598496.

The previous prime is 1287786449. The next prime is 1287786509. The reversal of 1287786468 is 8646877821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2332671 + ... + 2333222.

It is an arithmetic number, because the mean of its divisors is an integer number (130645032).

Almost surely, 2^1287786468 is an apocalyptic number.

It is an amenable number.

1287786468 is an abundant number, since it is smaller than the sum of its proper divisors (1847694300).

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

1287786468 is a wasteful number, since it uses less digits than its factorization.

1287786468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665923 (or 4665921 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 57.

The square root of 1287786468 is about 35885.7418482606. The cubic root of 1287786468 is about 1087.9642354611.

The spelling of 1287786468 in words is "one billion, two hundred eighty-seven million, seven hundred eighty-six thousand, four hundred sixty-eight".