1161145017 has 16 divisors (see below), whose sum is σ = 1740943680. Its totient is φ = 764768736.

The previous prime is 1161145003. The next prime is 1161145019. The reversal of 1161145017 is 7105411611.

1161145017 is a `hidden beast` number, since 1 + 1 + 611 + 45 + 0 + 1 + 7 = 666.

It is not a de Polignac number, because 1161145017 - 2¹⁰ = 1161143993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1161145019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256828 + ... + 261309.

It is an arithmetic number, because the mean of its divisors is an integer number (108808980).

Almost surely, 2^1161145017 is an apocalyptic number.

It is an amenable number.

1161145017 is a deficient number, since it is larger than the sum of its proper divisors (579798663).

1161145017 is an equidigital number, since it uses as much as digits as its factorization.

1161145017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518229 (or 518223 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 1161145017 is about 34075.5780141731. The cubic root of 1161145017 is about 1051.0631761802.

Adding to 1161145017 its reverse (7105411611), we get a palindrome (8266556628).

The spelling of 1161145017 in words is "one billion, one hundred sixty-one million, one hundred forty-five thousand, seventeen".