183145661 has 2 divisors, whose sum is σ = 183145662. Its totient is φ = 183145660.

The previous prime is 183145657. The next prime is 183145717. The reversal of 183145661 is 166541381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99880036 + 83265625 = 9994^2 + 9125^2 .

It is an emirp because it is prime and its reverse (166541381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 183145661 - 2² = 183145657 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (183145561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91572830 + 91572831.

It is an arithmetic number, because the mean of its divisors is an integer number (91572831).

Almost surely, 2^183145661 is an apocalyptic number.

It is an amenable number.

183145661 is a deficient number, since it is larger than the sum of its proper divisors (1).

183145661 is an equidigital number, since it uses as much as digits as its factorization.

183145661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 183145661 is about 13533.1319730504. The cubic root of 183145661 is about 567.8917305455.

The spelling of 183145661 in words is "one hundred eighty-three million, one hundred forty-five thousand, six hundred sixty-one".