1145116205 has 4 divisors (see below), whose sum is σ = 1374139452. Its totient is φ = 916092960.

The previous prime is 1145116169. The next prime is 1145116253. The reversal of 1145116205 is 5026115411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121308196 + 1023808009 = 11014^2 + 31997^2 .

It is not a de Polignac number, because 1145116205 - 2⁸ = 1145115949 is a prime.

It is a super-2 number, since 2×1145116205² = 2622582245907204050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114511616 + ... + 114511625.

It is an arithmetic number, because the mean of its divisors is an integer number (343534863).

Almost surely, 2^1145116205 is an apocalyptic number.

It is an amenable number.

1145116205 is a deficient number, since it is larger than the sum of its proper divisors (229023247).

1145116205 is an equidigital number, since it uses as much as digits as its factorization.

1145116205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229023246.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1145116205 is about 33839.5656739267. The cubic root of 1145116205 is about 1046.2043469967.

The spelling of 1145116205 in words is "one billion, one hundred forty-five million, one hundred sixteen thousand, two hundred five".