165870001303 has 2 divisors, whose sum is σ = 165870001304. Its totient is φ = 165870001302.

The previous prime is 165870001291. The next prime is 165870001309. The reversal of 165870001303 is 303100078561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165870001303 - 2¹³ = 165869993111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165870001309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82935000651 + 82935000652.

It is an arithmetic number, because the mean of its divisors is an integer number (82935000652).

Almost surely, 2^165870001303 is an apocalyptic number.

165870001303 is a deficient number, since it is larger than the sum of its proper divisors (1).

165870001303 is an equidigital number, since it uses as much as digits as its factorization.

165870001303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

Adding to 165870001303 its reverse (303100078561), we get a palindrome (468970079864).

The spelling of 165870001303 in words is "one hundred sixty-five billion, eight hundred seventy million, one thousand, three hundred three".