2078243117 has 2 divisors, whose sum is σ = 2078243118. Its totient is φ = 2078243116.

The previous prime is 2078243087. The next prime is 2078243129. The reversal of 2078243117 is 7113428702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1868746441 + 209496676 = 43229^2 + 14474^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078243117 - 2⁶ = 2078243053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078243147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039121558 + 1039121559.

It is an arithmetic number, because the mean of its divisors is an integer number (1039121559).

Almost surely, 2^2078243117 is an apocalyptic number.

It is an amenable number.

2078243117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078243117 is an equidigital number, since it uses as much as digits as its factorization.

2078243117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 2078243117 is about 45587.7518309469. The cubic root of 2078243117 is about 1276.1413574672.

The spelling of 2078243117 in words is "two billion, seventy-eight million, two hundred forty-three thousand, one hundred seventeen".