1293928279889 has 8 divisors (see below), whose sum is σ = 1479184046208. Its totient is φ = 1108774730880.

The previous prime is 1293928279883. The next prime is 1293928279913. The reversal of 1293928279889 is 9889728293921.

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

It is a cyclic number.

It is not a de Polignac number, because 1293928279889 - 2¹⁶ = 1293928214353 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 (1293928279883) 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, 25527197 + ... + 25577834.

It is an arithmetic number, because the mean of its divisors is an integer number (184898005776).

Almost surely, 2^{1293928279889} is an apocalyptic number.

It is an amenable number.

1293928279889 is a deficient number, since it is larger than the sum of its proper divisors (185255766319).

1293928279889 is an equidigital number, since it uses as much as digits as its factorization.

1293928279889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51108655.

The product of its digits is 564350976, while the sum is 77.

The spelling of 1293928279889 in words is "one trillion, two hundred ninety-three billion, nine hundred twenty-eight million, two hundred seventy-nine thousand, eight hundred eighty-nine".