164077393 has 2 divisors, whose sum is σ = 164077394. Its totient is φ = 164077392.

The previous prime is 164077339. The next prime is 164077399. The reversal of 164077393 is 393770461.

Together with previous prime (164077339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131951169 + 32126224 = 11487^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 164077393 - 2⁹ = 164076881 is a prime.

It is not a weakly prime, because it can be changed into another prime (164077399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82038696 + 82038697.

It is an arithmetic number, because the mean of its divisors is an integer number (82038697).

Almost surely, 2^164077393 is an apocalyptic number.

It is an amenable number.

164077393 is a deficient number, since it is larger than the sum of its proper divisors (1).

164077393 is an equidigital number, since it uses as much as digits as its factorization.

164077393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 164077393 is about 12809.2698074480. The cubic root of 164077393 is about 547.4564568555.

The spelling of 164077393 in words is "one hundred sixty-four million, seventy-seven thousand, three hundred ninety-three".