1161613441 has 2 divisors, whose sum is σ = 1161613442. Its totient is φ = 1161613440.

The previous prime is 1161613433. The next prime is 1161613471. The reversal of 1161613441 is 1443161611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796650625 + 364962816 = 28225^2 + 19104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161613441 - 2³ = 1161613433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161613421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580806720 + 580806721.

It is an arithmetic number, because the mean of its divisors is an integer number (580806721).

Almost surely, 2^1161613441 is an apocalyptic number.

It is an amenable number.

1161613441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161613441 is an equidigital number, since it uses as much as digits as its factorization.

1161613441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 1161613441 is about 34082.4506307865. The cubic root of 1161613441 is about 1051.2044956015.

The spelling of 1161613441 in words is "one billion, one hundred sixty-one million, six hundred thirteen thousand, four hundred forty-one".