166273747 has 2 divisors, whose sum is σ = 166273748. Its totient is φ = 166273746.

The previous prime is 166273727. The next prime is 166273777. The reversal of 166273747 is 747372661.

166273747 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 is a cyclic number.

It is not a de Polignac number, because 166273747 - 2¹⁹ = 165749459 is a prime.

It is not a weakly prime, because it can be changed into another prime (166273727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83136873 + 83136874.

It is an arithmetic number, because the mean of its divisors is an integer number (83136874).

Almost surely, 2^166273747 is an apocalyptic number.

166273747 is a deficient number, since it is larger than the sum of its proper divisors (1).

166273747 is an equidigital number, since it uses as much as digits as its factorization.

166273747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 166273747 is about 12894.7177945080. The cubic root of 166273747 is about 549.8884038047. Note that the first 3 decimals are identical.

The spelling of 166273747 in words is "one hundred sixty-six million, two hundred seventy-three thousand, seven hundred forty-seven".