1148899291889 has 4 divisors (see below), whose sum is σ = 1149065396724. Its totient is φ = 1148733187056.

The previous prime is 1148899291867. The next prime is 1148899291907. The reversal of 1148899291889 is 9881929988411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 458047411264 + 690851880625 = 676792^2 + 831175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148899291889 - 2⁸ = 1148899291633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148899291789) 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, 83042042 + ... + 83055875.

It is an arithmetic number, because the mean of its divisors is an integer number (287266349181).

Almost surely, 2^{1148899291889} is an apocalyptic number.

It is an amenable number.

1148899291889 is a deficient number, since it is larger than the sum of its proper divisors (166104835).

1148899291889 is an equidigital number, since it uses as much as digits as its factorization.

1148899291889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166104834.

The product of its digits is 214990848, while the sum is 77.

The spelling of 1148899291889 in words is "one trillion, one hundred forty-eight billion, eight hundred ninety-nine million, two hundred ninety-one thousand, eight hundred eighty-nine".