1101186161 has 2 divisors, whose sum is σ = 1101186162. Its totient is φ = 1101186160.

The previous prime is 1101186127. The next prime is 1101186167. The reversal of 1101186161 is 1616811011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606390625 + 494795536 = 24625^2 + 22244^2 .

It is an emirp because it is prime and its reverse (1616811011) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1919811011 and 1101189191.

It is a cyclic number.

It is not a de Polignac number, because 1101186161 - 2³⁰ = 27444337 is a prime.

It is a super-2 number, since 2×1101186161² = 2425221922355835842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101186161.

It is not a weakly prime, because it can be changed into another prime (1101186167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550593080 + 550593081.

It is an arithmetic number, because the mean of its divisors is an integer number (550593081).

Almost surely, 2^1101186161 is an apocalyptic number.

It is an amenable number.

1101186161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101186161 is an equidigital number, since it uses as much as digits as its factorization.

1101186161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 26.

The square root of 1101186161 is about 33184.1251353716. The cubic root of 1101186161 is about 1032.6510277466.

Adding to 1101186161 its reverse (1616811011), we get a palindrome (2717997172).

The spelling of 1101186161 in words is "one billion, one hundred one million, one hundred eighty-six thousand, one hundred sixty-one".