1146161161 has 4 divisors (see below), whose sum is σ = 1163268112. Its totient is φ = 1129054212.

The previous prime is 1146161141. The next prime is 1146161179. The reversal of 1146161161 is 1611616411.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1611616411 = 127 ⋅12689893.

It is a cyclic number.

It is not a de Polignac number, because 1146161161 - 2⁷ = 1146161033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146161141) 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, 8553375 + ... + 8553508.

It is an arithmetic number, because the mean of its divisors is an integer number (290817028).

Almost surely, 2^1146161161 is an apocalyptic number.

It is an amenable number.

1146161161 is a deficient number, since it is larger than the sum of its proper divisors (17106951).

1146161161 is an equidigital number, since it uses as much as digits as its factorization.

1146161161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17106950.

The product of its digits is 864, while the sum is 28.

The square root of 1146161161 is about 33855.0020085659. The cubic root of 1146161161 is about 1046.5224821446.

Adding to 1146161161 its reverse (1611616411), we get a palindrome (2757777572).

The spelling of 1146161161 in words is "one billion, one hundred forty-six million, one hundred sixty-one thousand, one hundred sixty-one".