1089108921793 has 2 divisors, whose sum is σ = 1089108921794. Its totient is φ = 1089108921792.

The previous prime is 1089108921773. The next prime is 1089108921847. The reversal of 1089108921793 is 3971298019801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1058690771329 + 30418150464 = 1028927^2 + 174408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089108921793 - 2¹³ = 1089108913601 is a prime.

It is a super-2 number, since 2×1089108921793² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1089108921773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544554460896 + 544554460897.

It is an arithmetic number, because the mean of its divisors is an integer number (544554460897).

Almost surely, 2^{1089108921793} is an apocalyptic number.

It is an amenable number.

1089108921793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089108921793 is an equidigital number, since it uses as much as digits as its factorization.

1089108921793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 58.

The spelling of 1089108921793 in words is "one trillion, eighty-nine billion, one hundred eight million, nine hundred twenty-one thousand, seven hundred ninety-three".