1722479159 has 2 divisors, whose sum is σ = 1722479160. Its totient is φ = 1722479158.

The previous prime is 1722479123. The next prime is 1722479173. The reversal of 1722479159 is 9519742271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1722479159 - 2¹² = 1722475063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1722479119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861239579 + 861239580.

It is an arithmetic number, because the mean of its divisors is an integer number (861239580).

Almost surely, 2^1722479159 is an apocalyptic number.

1722479159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722479159 is an equidigital number, since it uses as much as digits as its factorization.

1722479159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 47.

The square root of 1722479159 is about 41502.7608599717. The cubic root of 1722479159 is about 1198.7206641141.

The spelling of 1722479159 in words is "one billion, seven hundred twenty-two million, four hundred seventy-nine thousand, one hundred fifty-nine".