1987127143 has 8 divisors (see below), whose sum is σ = 2052115520. Its totient is φ = 1922732640.

The previous prime is 1987127123. The next prime is 1987127167. The reversal of 1987127143 is 3417217891.

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 1987127143 - 2²⁵ = 1953572711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1987127143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987127123) 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, 141663 + ... + 155056.

It is an arithmetic number, because the mean of its divisors is an integer number (256514440).

Almost surely, 2^1987127143 is an apocalyptic number.

1987127143 is a deficient number, since it is larger than the sum of its proper divisors (64988377).

1987127143 is a wasteful number, since it uses less digits than its factorization.

1987127143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296937.

The product of its digits is 84672, while the sum is 43.

The square root of 1987127143 is about 44577.2042977125. The cubic root of 1987127143 is about 1257.2120989810.

The spelling of 1987127143 in words is "one billion, nine hundred eighty-seven million, one hundred twenty-seven thousand, one hundred forty-three".