164516503 has 2 divisors, whose sum is σ = 164516504. Its totient is φ = 164516502.

The previous prime is 164516461. The next prime is 164516509. The reversal of 164516503 is 305615461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164516503 - 2⁹ = 164515991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164516509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82258251 + 82258252.

It is an arithmetic number, because the mean of its divisors is an integer number (82258252).

Almost surely, 2^164516503 is an apocalyptic number.

164516503 is a deficient number, since it is larger than the sum of its proper divisors (1).

164516503 is an equidigital number, since it uses as much as digits as its factorization.

164516503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 164516503 is about 12826.3986761678. The cubic root of 164516503 is about 547.9443962532.

The spelling of 164516503 in words is "one hundred sixty-four million, five hundred sixteen thousand, five hundred three".