1285814460 has 48 divisors (see below), whose sum is σ = 4114607616. Its totient is φ = 293900352.

The previous prime is 1285814419. The next prime is 1285814477. The reversal of 1285814460 is 644185821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530312 + ... + 1531151.

It is an arithmetic number, because the mean of its divisors is an integer number (85720992).

Almost surely, 2^1285814460 is an apocalyptic number.

1285814460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285814460 is an abundant number, since it is smaller than the sum of its proper divisors (2828793156).

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

1285814460 is a wasteful number, since it uses less digits than its factorization.

1285814460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061482 (or 3061480 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 1285814460 is about 35858.2551165000. The cubic root of 1285814460 is about 1087.4086127460.

The spelling of 1285814460 in words is "one billion, two hundred eighty-five million, eight hundred fourteen thousand, four hundred sixty".