1387362987 has 24 divisors (see below), whose sum is σ = 2076235200. Its totient is φ = 891652608.

The previous prime is 1387362983. The next prime is 1387362997. The reversal of 1387362987 is 7892637831.

1387362987 is a `hidden beast` number, since 1 + 3 + 8 + 7 + 3 + 629 + 8 + 7 = 666.

It is not a de Polignac number, because 1387362987 - 2² = 1387362983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1387362983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183963 + ... + 191355.

It is an arithmetic number, because the mean of its divisors is an integer number (86509800).

Almost surely, 2^1387362987 is an apocalyptic number.

1387362987 is a deficient number, since it is larger than the sum of its proper divisors (688872213).

1387362987 is a wasteful number, since it uses less digits than its factorization.

1387362987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8147 (or 8144 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 1387362987 is about 37247.3218768813. The cubic root of 1387362987 is about 1115.3128381432.

The spelling of 1387362987 in words is "one billion, three hundred eighty-seven million, three hundred sixty-two thousand, nine hundred eighty-seven".