1387656163 has 4 divisors (see below), whose sum is σ = 1407200688. Its totient is φ = 1368111640.

The previous prime is 1387656157. The next prime is 1387656169. The reversal of 1387656163 is 3616567831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3616567831 = 57829 ⋅62539.

It is an interprime number because it is at equal distance from previous prime (1387656157) and next prime (1387656169).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387656163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1387656169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9772156 + ... + 9772297.

It is an arithmetic number, because the mean of its divisors is an integer number (351800172).

Almost surely, 2^1387656163 is an apocalyptic number.

1387656163 is a deficient number, since it is larger than the sum of its proper divisors (19544525).

1387656163 is an equidigital number, since it uses as much as digits as its factorization.

1387656163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19544524.

The product of its digits is 544320, while the sum is 46.

The square root of 1387656163 is about 37251.2572002610. The cubic root of 1387656163 is about 1115.3913948319.

The spelling of 1387656163 in words is "one billion, three hundred eighty-seven million, six hundred fifty-six thousand, one hundred sixty-three".