1378233870858 has 96 divisors (see below), whose sum is σ = 3392782061760. Its totient is φ = 400844920320.

The previous prime is 1378233870803. The next prime is 1378233870883. The reversal of 1378233870858 is 8580783328731.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1378233870795 and 1378233870804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1619698 + ... + 2319458.

It is an arithmetic number, because the mean of its divisors is an integer number (35341479810).

Almost surely, 2^{1378233870858} is an apocalyptic number.

1378233870858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378233870858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696391030880).

1378233870858 is an abundant number, since it is smaller than the sum of its proper divisors (2014548190902).

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

1378233870858 is a wasteful number, since it uses less digits than its factorization.

1378233870858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700244 (or 700241 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 1378233870858 in words is "one trillion, three hundred seventy-eight billion, two hundred thirty-three million, eight hundred seventy thousand, eight hundred fifty-eight".