1089817089149 has 4 divisors (see below), whose sum is σ = 1153923976764. Its totient is φ = 1025710201536.

The previous prime is 1089817089121. The next prime is 1089817089161. The reversal of 1089817089149 is 9419807189801.

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 376527049924 + 713290039225 = 613618^2 + 844565^2 .

It is not a de Polignac number, because 1089817089149 - 2¹⁶ = 1089817023613 is a prime.

It is a Duffinian 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 (1089817089649) 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, 32053443782 + ... + 32053443815.

It is an arithmetic number, because the mean of its divisors is an integer number (288480994191).

Almost surely, 2^{1089817089149} is an apocalyptic number.

It is an amenable number.

1089817089149 is a deficient number, since it is larger than the sum of its proper divisors (64106887615).

1089817089149 is an equidigital number, since it uses as much as digits as its factorization.

1089817089149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64106887614.

The product of its (nonzero) digits is 10450944, while the sum is 65.

The spelling of 1089817089149 in words is "one trillion, eighty-nine billion, eight hundred seventeen million, eighty-nine thousand, one hundred forty-nine".