1161992073 has 16 divisors (see below), whose sum is σ = 1705971456. Its totient is φ = 697653840.

The previous prime is 1161992047. The next prime is 1161992077. The reversal of 1161992073 is 3702991611.

It is a happy number.

It is not a de Polignac number, because 1161992073 - 2³⁰ = 88250249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161992077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161011 + ... + 168072.

It is an arithmetic number, because the mean of its divisors is an integer number (106623216).

Almost surely, 2^1161992073 is an apocalyptic number.

It is an amenable number.

1161992073 is a deficient number, since it is larger than the sum of its proper divisors (543979383).

1161992073 is a wasteful number, since it uses less digits than its factorization.

1161992073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329204.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 1161992073 is about 34088.0048257448. The cubic root of 1161992073 is about 1051.3186977991.

The spelling of 1161992073 in words is "one billion, one hundred sixty-one million, nine hundred ninety-two thousand, seventy-three".