1587218964 has 12 divisors (see below), whose sum is σ = 3703510944. Its totient is φ = 529072984.

The previous prime is 1587218959. The next prime is 1587219031. The reversal of 1587218964 is 4698127851.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66134112 + ... + 66134135.

It is an arithmetic number, because the mean of its divisors is an integer number (308625912).

Almost surely, 2^1587218964 is an apocalyptic number.

It is an amenable number.

1587218964 is an abundant number, since it is smaller than the sum of its proper divisors (2116291980).

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

1587218964 is a wasteful number, since it uses less digits than its factorization.

1587218964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132268254 (or 132268252 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The square root of 1587218964 is about 39839.9167167804. The cubic root of 1587218964 is about 1166.4844343760.

The spelling of 1587218964 in words is "one billion, five hundred eighty-seven million, two hundred eighteen thousand, nine hundred sixty-four".