1398959726613 has 8 divisors (see below), whose sum is σ = 1896894544800. Its totient is φ = 916832363088.

The previous prime is 1398959726587. The next prime is 1398959726621. The reversal of 1398959726613 is 3166279598931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1398959726613 - 2³⁴ = 1381779857429 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398959726653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3951863458 + ... + 3951863811.

It is an arithmetic number, because the mean of its divisors is an integer number (237111818100).

Almost surely, 2^{1398959726613} is an apocalyptic number.

It is an amenable number.

1398959726613 is a deficient number, since it is larger than the sum of its proper divisors (497934818187).

1398959726613 is an equidigital number, since it uses as much as digits as its factorization.

1398959726613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903727331.

The product of its digits is 132269760, while the sum is 69.

The spelling of 1398959726613 in words is "one trillion, three hundred ninety-eight billion, nine hundred fifty-nine million, seven hundred twenty-six thousand, six hundred thirteen".