2158615559 has 2 divisors, whose sum is σ = 2158615560. Its totient is φ = 2158615558.

The previous prime is 2158615549. The next prime is 2158615583. The reversal of 2158615559 is 9555168512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2158615559 - 2¹² = 2158611463 is a prime.

It is a super-2 number, since 2×2158615559² = 9319242263113764962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158615549) 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, 1079307779 + 1079307780.

It is an arithmetic number, because the mean of its divisors is an integer number (1079307780).

Almost surely, 2^2158615559 is an apocalyptic number.

2158615559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158615559 is an equidigital number, since it uses as much as digits as its factorization.

2158615559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 47.

The square root of 2158615559 is about 46460.9035534179. The cubic root of 2158615559 is about 1292.3845802053.

The spelling of 2158615559 in words is "two billion, one hundred fifty-eight million, six hundred fifteen thousand, five hundred fifty-nine".