1948398693359 has 4 divisors (see below), whose sum is σ = 1948641977520. Its totient is φ = 1948155409200.

The previous prime is 1948398693349. The next prime is 1948398693419. The reversal of 1948398693359 is 9533968938491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1948398693359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1948398693359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948398693349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121630067 + ... + 121646084.

It is an arithmetic number, because the mean of its divisors is an integer number (487160494380).

Almost surely, 2^{1948398693359} is an apocalyptic number.

1948398693359 is a deficient number, since it is larger than the sum of its proper divisors (243284161).

1948398693359 is an equidigital number, since it uses as much as digits as its factorization.

1948398693359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243284160.

The product of its digits is 1360488960, while the sum is 77.

The spelling of 1948398693359 in words is "one trillion, nine hundred forty-eight billion, three hundred ninety-eight million, six hundred ninety-three thousand, three hundred fifty-nine".