1387917815094 has 24 divisors (see below), whose sum is σ = 3084281049720. Its totient is φ = 462636385956.

The previous prime is 1387917815071. The next prime is 1387917815099. The reversal of 1387917815094 is 4905187197831.

1387917815094 is a `hidden beast` number, since 1 + 38 + 7 + 9 + 17 + 81 + 509 + 4 = 666.

It is a super-2 number, since 2×1387917815094² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387917815099) 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 11 ways as a sum of consecutive naturals, for example, 8577067 + ... + 8737385.

It is an arithmetic number, because the mean of its divisors is an integer number (128511710405).

Almost surely, 2^{1387917815094} is an apocalyptic number.

1387917815094 is an abundant number, since it is smaller than the sum of its proper divisors (1696363234626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387917815094 is an frugal number, since it uses more digits than its factorization.

1387917815094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320649 (or 160324 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 63.

The spelling of 1387917815094 in words is "one trillion, three hundred eighty-seven billion, nine hundred seventeen million, eight hundred fifteen thousand, ninety-four".