1387155383718 has 48 divisors (see below), whose sum is σ = 3005541872640. Its totient is φ = 426617204832.

The previous prime is 1387155383701. The next prime is 1387155383759. The reversal of 1387155383718 is 8173835517831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1853823 + ... + 2492181.

It is an arithmetic number, because the mean of its divisors is an integer number (62615455680).

Almost surely, 2^{1387155383718} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387155383718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502770936320).

1387155383718 is an abundant number, since it is smaller than the sum of its proper divisors (1618386488922).

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

1387155383718 is a wasteful number, since it uses less digits than its factorization.

1387155383718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640533 (or 640520 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 60.

The spelling of 1387155383718 in words is "one trillion, three hundred eighty-seven billion, one hundred fifty-five million, three hundred eighty-three thousand, seven hundred eighteen".