166314139 has 2 divisors, whose sum is σ = 166314140. Its totient is φ = 166314138.

The previous prime is 166314107. The next prime is 166314143. The reversal of 166314139 is 931413661.

It is a happy number.

166314139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (931413661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166314139 - 2⁵ = 166314107 is a prime.

It is a super-2 number, since 2×166314139² = 55320785662622642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166314199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83157069 + 83157070.

It is an arithmetic number, because the mean of its divisors is an integer number (83157070).

Almost surely, 2^166314139 is an apocalyptic number.

166314139 is a deficient number, since it is larger than the sum of its proper divisors (1).

166314139 is an equidigital number, since it uses as much as digits as its factorization.

166314139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 166314139 is about 12896.2839221227. The cubic root of 166314139 is about 549.9329273580.

The spelling of 166314139 in words is "one hundred sixty-six million, three hundred fourteen thousand, one hundred thirty-nine".