1149155671909 has 16 divisors (see below), whose sum is σ = 1370499694848. Its totient is φ = 942111257472.

The previous prime is 1149155671907. The next prime is 1149155671919. The reversal of 1149155671909 is 9091765519411.

It is not a de Polignac number, because 1149155671909 - 2¹ = 1149155671907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149155671907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2767929 + ... + 3155905.

It is an arithmetic number, because the mean of its divisors is an integer number (85656230928).

Almost surely, 2^{1149155671909} is an apocalyptic number.

It is an amenable number.

1149155671909 is a deficient number, since it is larger than the sum of its proper divisors (221344022939).

1149155671909 is a wasteful number, since it uses less digits than its factorization.

1149155671909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406404.

The product of its (nonzero) digits is 3061800, while the sum is 58.

The spelling of 1149155671909 in words is "one trillion, one hundred forty-nine billion, one hundred fifty-five million, six hundred seventy-one thousand, nine hundred nine".