1145164085 has 32 divisors (see below), whose sum is σ = 1498543200. Its totient is φ = 835089408.

The previous prime is 1145164079. The next prime is 1145164091. The reversal of 1145164085 is 5804615411.

It is an interprime number because it is at equal distance from previous prime (1145164079) and next prime (1145164091).

It can be written as a sum of positive squares in 16 ways, for example, as 935319889 + 209844196 = 30583^2 + 14486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145164085 - 2¹² = 1145159989 is a prime.

It is a super-2 number, since 2×1145164085² = 2622801563147774450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3069959 + ... + 3070331.

It is an arithmetic number, because the mean of its divisors is an integer number (46829475).

Almost surely, 2^1145164085 is an apocalyptic number.

It is an amenable number.

1145164085 is a deficient number, since it is larger than the sum of its proper divisors (353379115).

1145164085 is a wasteful number, since it uses less digits than its factorization.

1145164085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1145164085 is about 33840.2731224203. The cubic root of 1145164085 is about 1046.2189282144.

Adding to 1145164085 its reverse (5804615411), we get a palindrome (6949779496).

The spelling of 1145164085 in words is "one billion, one hundred forty-five million, one hundred sixty-four thousand, eighty-five".