1398818379756 has 24 divisors (see below), whose sum is σ = 3730182346240. Its totient is φ = 399662394192.

The previous prime is 1398818379703. The next prime is 1398818379757. The reversal of 1398818379756 is 6579738188931.

It is not an unprimeable number, because it can be changed into a prime (1398818379757) 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, 8326299796 + ... + 8326299963.

Almost surely, 2^{1398818379756} is an apocalyptic number.

It is an amenable number.

1398818379756 is an abundant number, since it is smaller than the sum of its proper divisors (2331363966484).

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

1398818379756 is a wasteful number, since it uses less digits than its factorization.

1398818379756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16652599773 (or 16652599771 counting only the distinct ones).

The product of its digits is 548674560, while the sum is 75.

The spelling of 1398818379756 in words is "one trillion, three hundred ninety-eight billion, eight hundred eighteen million, three hundred seventy-nine thousand, seven hundred fifty-six".