1165845047 has 2 divisors, whose sum is σ = 1165845048. Its totient is φ = 1165845046.

The previous prime is 1165845041. The next prime is 1165845053. The reversal of 1165845047 is 7405485611.

It is a balanced prime because it is at equal distance from previous prime (1165845041) and next prime (1165845053).

It is a cyclic number.

It is not a de Polignac number, because 1165845047 - 2¹⁰ = 1165844023 is a prime.

It is a super-2 number, since 2×1165845047² = 2718389347228864418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1165844995 and 1165845013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165845041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582922523 + 582922524.

It is an arithmetic number, because the mean of its divisors is an integer number (582922524).

Almost surely, 2^1165845047 is an apocalyptic number.

1165845047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165845047 is an equidigital number, since it uses as much as digits as its factorization.

1165845047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 1165845047 is about 34144.4731545239. The cubic root of 1165845047 is about 1052.4794156091.

The spelling of 1165845047 in words is "one billion, one hundred sixty-five million, eight hundred forty-five thousand, forty-seven".