166204783 has 2 divisors, whose sum is σ = 166204784. Its totient is φ = 166204782.

The previous prime is 166204757. The next prime is 166204789. The reversal of 166204783 is 387402661.

It is a strong prime.

It is an emirp because it is prime and its reverse (387402661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166204783 - 2⁹ = 166204271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166204789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83102391 + 83102392.

It is an arithmetic number, because the mean of its divisors is an integer number (83102392).

Almost surely, 2^166204783 is an apocalyptic number.

166204783 is a deficient number, since it is larger than the sum of its proper divisors (1).

166204783 is an equidigital number, since it uses as much as digits as its factorization.

166204783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 166204783 is about 12892.0433989341. The cubic root of 166204783 is about 549.8123690554.

The spelling of 166204783 in words is "one hundred sixty-six million, two hundred four thousand, seven hundred eighty-three".