1587461868 has 48 divisors (see below), whose sum is σ = 4120956000. Its totient is φ = 528470784.

The previous prime is 1587461867. The next prime is 1587461873. The reversal of 1587461868 is 8681647851.

It is a happy number.

1587461868 is a `hidden beast` number, since 1 + 587 + 46 + 18 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1587461867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78288 + ... + 96456.

It is an arithmetic number, because the mean of its divisors is an integer number (85853250).

Almost surely, 2^1587461868 is an apocalyptic number.

1587461868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1587461868 is an abundant number, since it is smaller than the sum of its proper divisors (2533494132).

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

1587461868 is a wasteful number, since it uses less digits than its factorization.

1587461868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18991 (or 18983 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 1587461868 is about 39842.9651005043. The cubic root of 1587461868 is about 1166.5439366225.

The spelling of 1587461868 in words is "one billion, five hundred eighty-seven million, four hundred sixty-one thousand, eight hundred sixty-eight".