1011661153 has 2 divisors, whose sum is σ = 1011661154. Its totient is φ = 1011661152.

The previous prime is 1011661151. The next prime is 1011661199. The reversal of 1011661153 is 3511661101.

1011661153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733705569 + 277955584 = 27087^2 + 16672^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011661153 - 2¹ = 1011661151 is a prime.

Together with 1011661151, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1011661151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505830576 + 505830577.

It is an arithmetic number, because the mean of its divisors is an integer number (505830577).

Almost surely, 2^1011661153 is an apocalyptic number.

It is an amenable number.

1011661153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011661153 is an equidigital number, since it uses as much as digits as its factorization.

1011661153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1011661153 is about 31806.6212132002. The cubic root of 1011661153 is about 1003.8720389635.

The spelling of 1011661153 in words is "one billion, eleven million, six hundred sixty-one thousand, one hundred fifty-three".