1387163626 has 16 divisors (see below), whose sum is σ = 2177388864. Its totient is φ = 661538944.

The previous prime is 1387163621. The next prime is 1387163639. The reversal of 1387163626 is 6263617831.

It is not an unprimeable number, because it can be changed into a prime (1387163621) 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 7 ways as a sum of consecutive naturals, for example, 26476 + ... + 58951.

It is an arithmetic number, because the mean of its divisors is an integer number (136086804).

Almost surely, 2^1387163626 is an apocalyptic number.

1387163626 is a deficient number, since it is larger than the sum of its proper divisors (790225238).

1387163626 is a wasteful number, since it uses less digits than its factorization.

1387163626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85805.

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

The square root of 1387163626 is about 37244.6456017506. The cubic root of 1387163626 is about 1115.2594129195.

The spelling of 1387163626 in words is "one billion, three hundred eighty-seven million, one hundred sixty-three thousand, six hundred twenty-six".