1387632616 has 16 divisors (see below), whose sum is σ = 2754859140. Its totient is φ = 653003520.

The previous prime is 1387632611. The next prime is 1387632647. The reversal of 1387632616 is 6162367831.

It can be written as a sum of positive squares in 2 ways, for example, as 1384584100 + 3048516 = 37210^2 + 1746^2 .

It is not an unprimeable number, because it can be changed into a prime (1387632611) 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 3 ways as a sum of consecutive naturals, for example, 5101455 + ... + 5101726.

Almost surely, 2^1387632616 is an apocalyptic number.

It is an amenable number.

1387632616 is a deficient number, since it is larger than the sum of its proper divisors (1367226524).

1387632616 is a wasteful number, since it uses less digits than its factorization.

1387632616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10203204 (or 10203200 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 1387632616 is about 37250.9411424732. The cubic root of 1387632616 is about 1115.3850858075.

The spelling of 1387632616 in words is "one billion, three hundred eighty-seven million, six hundred thirty-two thousand, six hundred sixteen".