1163451061 has 2 divisors, whose sum is σ = 1163451062. Its totient is φ = 1163451060.

The previous prime is 1163451041. The next prime is 1163451119. The reversal of 1163451061 is 1601543611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1053327025 + 110124036 = 32455^2 + 10494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1163451061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163451001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581725530 + 581725531.

It is an arithmetic number, because the mean of its divisors is an integer number (581725531).

Almost surely, 2^1163451061 is an apocalyptic number.

It is an amenable number.

1163451061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163451061 is an equidigital number, since it uses as much as digits as its factorization.

1163451061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1163451061 is about 34109.3984262402. The cubic root of 1163451061 is about 1051.7585229004.

Adding to 1163451061 its reverse (1601543611), we get a palindrome (2764994672).

The spelling of 1163451061 in words is "one billion, one hundred sixty-three million, four hundred fifty-one thousand, sixty-one".