1126981965169 has 4 divisors (see below), whose sum is σ = 1128371586160. Its totient is φ = 1125592344180.

The previous prime is 1126981965143. The next prime is 1126981965203. The reversal of 1126981965169 is 9615691896211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126981965169 is a prime.

It is a super-2 number, since 2×1126981965169² (a number of 25 digits) contains 22 as substring.

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 1126981965169.

It is not an unprimeable number, because it can be changed into a prime (1126981975169) 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, 694809279 + ... + 694810900.

It is an arithmetic number, because the mean of its divisors is an integer number (282092896540).

Almost surely, 2^{1126981965169} is an apocalyptic number.

It is an amenable number.

1126981965169 is a deficient number, since it is larger than the sum of its proper divisors (1389620991).

1126981965169 is an equidigital number, since it uses as much as digits as its factorization.

1126981965169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389620990.

The product of its digits is 12597120, while the sum is 64.

The spelling of 1126981965169 in words is "one trillion, one hundred twenty-six billion, nine hundred eighty-one million, nine hundred sixty-five thousand, one hundred sixty-nine".