164577139 has 2 divisors, whose sum is σ = 164577140. Its totient is φ = 164577138.

The previous prime is 164577103. The next prime is 164577163. The reversal of 164577139 is 931775461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164577139 - 2⁷ = 164577011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164577095 and 164577104.

It is not a weakly prime, because it can be changed into another prime (164577169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82288569 + 82288570.

It is an arithmetic number, because the mean of its divisors is an integer number (82288570).

Almost surely, 2^164577139 is an apocalyptic number.

164577139 is a deficient number, since it is larger than the sum of its proper divisors (1).

164577139 is an equidigital number, since it uses as much as digits as its factorization.

164577139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 164577139 is about 12828.7621772328. The cubic root of 164577139 is about 548.0117067757.

The spelling of 164577139 in words is "one hundred sixty-four million, five hundred seventy-seven thousand, one hundred thirty-nine".