183071881161 has 189 divisors, whose sum is σ = 316677881541. Its totient is φ = 105728141376.

The previous prime is 183071881121. The next prime is 183071881163. The reversal of 183071881161 is 161188170381.

It is a happy number.

The square root of 183071881161 is 427869.

It is a perfect power (a square), and thus also a powerful number.

183071881161 is a `hidden beast` number, since 1 + 8 + 307 + 188 + 1 + 161 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4751482761 + 178320398400 = 68931^2 + 422280^2 .

It is not a de Polignac number, because 183071881161 - 2¹¹ = 183071879113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (183071881163) by changing a digit.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 3454186411 + ... + 3454186463.

Almost surely, 2^183071881161 is an apocalyptic number.

183071881161 is the 427869-th square number.

183071881161 is the 213935-th centered octagonal number.

It is an amenable number.

183071881161 is a deficient number, since it is larger than the sum of its proper divisors (133606000380).

183071881161 is an frugal number, since it uses more digits than its factorization.

183071881161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The spelling of 183071881161 in words is "one hundred eighty-three billion, seventy-one million, eight hundred eighty-one thousand, one hundred sixty-one".