1145366173 has 4 divisors (see below), whose sum is σ = 1308989920. Its totient is φ = 981742428.

The previous prime is 1145366161. The next prime is 1145366179. The reversal of 1145366173 is 3716635411.

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 not a de Polignac number, because 1145366173 - 2⁵ = 1145366141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145366179) 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, 81811863 + ... + 81811876.

It is an arithmetic number, because the mean of its divisors is an integer number (327247480).

Almost surely, 2^1145366173 is an apocalyptic number.

It is an amenable number.

1145366173 is a deficient number, since it is larger than the sum of its proper divisors (163623747).

1145366173 is an equidigital number, since it uses as much as digits as its factorization.

1145366173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163623746.

The product of its digits is 45360, while the sum is 37.

The square root of 1145366173 is about 33843.2589004073. The cubic root of 1145366173 is about 1046.2804669516.

The spelling of 1145366173 in words is "one billion, one hundred forty-five million, three hundred sixty-six thousand, one hundred seventy-three".