2161034503 has 2 divisors, whose sum is σ = 2161034504. Its totient is φ = 2161034502.

The previous prime is 2161034501. The next prime is 2161034569. The reversal of 2161034503 is 3054301612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2161034503 - 2¹ = 2161034501 is a prime.

Together with 2161034501, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161034501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080517251 + 1080517252.

It is an arithmetic number, because the mean of its divisors is an integer number (1080517252).

Almost surely, 2^2161034503 is an apocalyptic number.

2161034503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161034503 is an equidigital number, since it uses as much as digits as its factorization.

2161034503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2161034503 is about 46486.9283024809. The cubic root of 2161034503 is about 1292.8671485961.

The spelling of 2161034503 in words is "two billion, one hundred sixty-one million, thirty-four thousand, five hundred three".