1487871887 has 4 divisors (see below), whose sum is σ = 1497348936. Its totient is φ = 1478394840.

The previous prime is 1487871871. The next prime is 1487871901. The reversal of 1487871887 is 7881787841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1487871887 - 2⁴ = 1487871871 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 (1487874887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738289 + ... + 4738602.

It is an arithmetic number, because the mean of its divisors is an integer number (374337234).

Almost surely, 2^1487871887 is an apocalyptic number.

1487871887 is a deficient number, since it is larger than the sum of its proper divisors (9477049).

1487871887 is an equidigital number, since it uses as much as digits as its factorization.

1487871887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477048.

The product of its digits is 5619712, while the sum is 59.

The square root of 1487871887 is about 38572.9424208214. The cubic root of 1487871887 is about 1141.6207292532.

The spelling of 1487871887 in words is "one billion, four hundred eighty-seven million, eight hundred seventy-one thousand, eight hundred eighty-seven".