2159445623 has 2 divisors, whose sum is σ = 2159445624. Its totient is φ = 2159445622.

The previous prime is 2159445599. The next prime is 2159445637. The reversal of 2159445623 is 3265449512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2159445623 - 2⁶ = 2159445559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2159445653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079722811 + 1079722812.

It is an arithmetic number, because the mean of its divisors is an integer number (1079722812).

Almost surely, 2^2159445623 is an apocalyptic number.

2159445623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159445623 is an equidigital number, since it uses as much as digits as its factorization.

2159445623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The square root of 2159445623 is about 46469.8356248438. The cubic root of 2159445623 is about 1292.5502148307.

The spelling of 2159445623 in words is "two billion, one hundred fifty-nine million, four hundred forty-five thousand, six hundred twenty-three".