1611316061 has 2 divisors, whose sum is σ = 1611316062. Its totient is φ = 1611316060.

The previous prime is 1611316043. The next prime is 1611316073. The reversal of 1611316061 is 1606131161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1542525625 + 68790436 = 39275^2 + 8294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611316061 - 2¹⁰ = 1611315037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1611316061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611316561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805658030 + 805658031.

It is an arithmetic number, because the mean of its divisors is an integer number (805658031).

Almost surely, 2^1611316061 is an apocalyptic number.

It is an amenable number.

1611316061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611316061 is an equidigital number, since it uses as much as digits as its factorization.

1611316061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1611316061 is about 40141.2015390671. The cubic root of 1611316061 is about 1172.3579837783.

The spelling of 1611316061 in words is "one billion, six hundred eleven million, three hundred sixteen thousand, sixty-one".