1213915843001 has 8 divisors (see below), whose sum is σ = 1218035627784. Its totient is φ = 1209797596800.

The previous prime is 1213915842983. The next prime is 1213915843033. The reversal of 1213915843001 is 1003485193121.

It can be written as a sum of positive squares in 4 ways, for example, as 546304287376 + 667611555625 = 739124^2 + 817075^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213915843001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1213915843061) 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, 1207151 + ... + 1971051.

It is an arithmetic number, because the mean of its divisors is an integer number (152254453473).

Almost surely, 2^{1213915843001} is an apocalyptic number.

It is an amenable number.

1213915843001 is a deficient number, since it is larger than the sum of its proper divisors (4119784783).

1213915843001 is an equidigital number, since it uses as much as digits as its factorization.

1213915843001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769291.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 1213915843001 in words is "one trillion, two hundred thirteen billion, nine hundred fifteen million, eight hundred forty-three thousand, one".