1587378487 has 8 divisors (see below), whose sum is σ = 1605796976. Its totient is φ = 1569065472.

The previous prime is 1587378479. The next prime is 1587378493. The reversal of 1587378487 is 7848737851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1587378487 - 2³ = 1587378479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587378407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4108 + ... + 56494.

It is an arithmetic number, because the mean of its divisors is an integer number (200724622).

Almost surely, 2^1587378487 is an apocalyptic number.

1587378487 is a deficient number, since it is larger than the sum of its proper divisors (18418489).

1587378487 is a wasteful number, since it uses less digits than its factorization.

1587378487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52737.

The product of its digits is 10536960, while the sum is 58.

The square root of 1587378487 is about 39841.9187163470. The cubic root of 1587378487 is about 1166.5235121312.

The spelling of 1587378487 in words is "one billion, five hundred eighty-seven million, three hundred seventy-eight thousand, four hundred eighty-seven".