1378125342818 has 16 divisors (see below), whose sum is σ = 2465218005120. Its totient is φ = 564945792576.

The previous prime is 1378125342773. The next prime is 1378125342823. The reversal of 1378125342818 is 8182435218731.

It is a super-2 number, since 2×1378125342818² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1378125342818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139945863 + ... + 2139946506.

It is an arithmetic number, because the mean of its divisors is an integer number (154076125320).

Almost surely, 2^{1378125342818} is an apocalyptic number.

1378125342818 is a deficient number, since it is larger than the sum of its proper divisors (1087092662302).

1378125342818 is a wasteful number, since it uses less digits than its factorization.

1378125342818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279892401.

The product of its digits is 2580480, while the sum is 53.

The spelling of 1378125342818 in words is "one trillion, three hundred seventy-eight billion, one hundred twenty-five million, three hundred forty-two thousand, eight hundred eighteen".