1371987884 has 6 divisors (see below), whose sum is σ = 2400978804. Its totient is φ = 685993940.

The previous prime is 1371987847. The next prime is 1371987889. The reversal of 1371987884 is 4887891731.

It is not an unprimeable number, because it can be changed into a prime (1371987889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171498482 + ... + 171498489.

It is an arithmetic number, because the mean of its divisors is an integer number (400163134).

Almost surely, 2^1371987884 is an apocalyptic number.

It is an amenable number.

1371987884 is a deficient number, since it is larger than the sum of its proper divisors (1028990920).

1371987884 is a wasteful number, since it uses less digits than its factorization.

1371987884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342996975 (or 342996973 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 56.

The square root of 1371987884 is about 37040.3548039162. The cubic root of 1371987884 is about 1111.1774654581.

The spelling of 1371987884 in words is "one billion, three hundred seventy-one million, nine hundred eighty-seven thousand, eight hundred eighty-four".