2155869607 has 2 divisors, whose sum is σ = 2155869608. Its totient is φ = 2155869606.

The previous prime is 2155869601. The next prime is 2155869613. The reversal of 2155869607 is 7069685512.

It is a balanced prime because it is at equal distance from previous prime (2155869601) and next prime (2155869613).

It is a cyclic number.

It is not a de Polignac number, because 2155869607 - 2⁷ = 2155869479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155869601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077934803 + 1077934804.

It is an arithmetic number, because the mean of its divisors is an integer number (1077934804).

Almost surely, 2^2155869607 is an apocalyptic number.

2155869607 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155869607 is an equidigital number, since it uses as much as digits as its factorization.

2155869607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 2155869607 is about 46431.3429377183. The cubic root of 2155869607 is about 1291.8363380877.

The spelling of 2155869607 in words is "two billion, one hundred fifty-five million, eight hundred sixty-nine thousand, six hundred seven".