1487788671 has 4 divisors (see below), whose sum is σ = 1983718232. Its totient is φ = 991859112.

The previous prime is 1487788657. The next prime is 1487788693. The reversal of 1487788671 is 1768877841.

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

It is not a de Polignac number, because 1487788671 - 2⁷ = 1487788543 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 (1487788651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247964776 + ... + 247964781.

It is an arithmetic number, because the mean of its divisors is an integer number (495929558).

Almost surely, 2^1487788671 is an apocalyptic number.

1487788671 is a deficient number, since it is larger than the sum of its proper divisors (495929561).

1487788671 is an equidigital number, since it uses as much as digits as its factorization.

1487788671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495929560.

The product of its digits is 4214784, while the sum is 57.

The square root of 1487788671 is about 38571.8637221486. The cubic root of 1487788671 is about 1141.5994454131.

The spelling of 1487788671 in words is "one billion, four hundred eighty-seven million, seven hundred eighty-eight thousand, six hundred seventy-one".