166112857 has 2 divisors, whose sum is σ = 166112858. Its totient is φ = 166112856.

The previous prime is 166112851. The next prime is 166112861. The reversal of 166112857 is 758211661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115261696 + 50851161 = 10736^2 + 7131^2 .

It is a cyclic number.

It is not a de Polignac number, because 166112857 - 2¹¹ = 166110809 is a prime.

It is not a weakly prime, because it can be changed into another prime (166112851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83056428 + 83056429.

It is an arithmetic number, because the mean of its divisors is an integer number (83056429).

Almost surely, 2^166112857 is an apocalyptic number.

It is an amenable number.

166112857 is a deficient number, since it is larger than the sum of its proper divisors (1).

166112857 is an equidigital number, since it uses as much as digits as its factorization.

166112857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 166112857 is about 12888.4776835746. The cubic root of 166112857 is about 549.7109853449.

The spelling of 166112857 in words is "one hundred sixty-six million, one hundred twelve thousand, eight hundred fifty-seven".