1163403161 has 4 divisors (see below), whose sum is σ = 1169902800. Its totient is φ = 1156903524.

The previous prime is 1163403151. The next prime is 1163403169. The reversal of 1163403161 is 1613043611.

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: 1613043611 = 751 ⋅2147861.

It is a cyclic number.

It is not a de Polignac number, because 1163403161 - 2⁶ = 1163403097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1163403161.

It is not an unprimeable number, because it can be changed into a prime (1163403169) 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, 3249551 + ... + 3249908.

It is an arithmetic number, because the mean of its divisors is an integer number (292475700).

Almost surely, 2^1163403161 is an apocalyptic number.

It is an amenable number.

1163403161 is a deficient number, since it is larger than the sum of its proper divisors (6499639).

1163403161 is an equidigital number, since it uses as much as digits as its factorization.

1163403161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499638.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1163403161 is about 34108.6962664949. The cubic root of 1163403161 is about 1051.7440888526.

Adding to 1163403161 its reverse (1613043611), we get a palindrome (2776446772).

The spelling of 1163403161 in words is "one billion, one hundred sixty-three million, four hundred three thousand, one hundred sixty-one".