1587471616 has 18 divisors (see below), whose sum is σ = 3168742682. Its totient is φ = 793735680.

The previous prime is 1587471563. The next prime is 1587471619. The reversal of 1587471616 is 6161747851.

It can be written as a sum of positive squares in only one way, i.e., 1587225600 + 246016 = 39840^2 + 496^2 .

It is a super-2 number, since 2×1587471616² = 5040132263211302912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587471619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3100275 + ... + 3100786.

Almost surely, 2^1587471616 is an apocalyptic number.

1587471616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1587471616 is a deficient number, since it is larger than the sum of its proper divisors (1581271066).

1587471616 is an frugal number, since it uses more digits than its factorization.

1587471616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201077 (or 6201063 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The square root of 1587471616 is about 39843.0874305694. The cubic root of 1587471616 is about 1166.5463243852.

The spelling of 1587471616 in words is "one billion, five hundred eighty-seven million, four hundred seventy-one thousand, six hundred sixteen".