2378122709 has 2 divisors, whose sum is σ = 2378122710. Its totient is φ = 2378122708.

The previous prime is 2378122633. The next prime is 2378122711. The reversal of 2378122709 is 9072218732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249834609 + 1128288100 = 35353^2 + 33590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2378122709 is a prime.

It is a super-2 number, since 2×2378122709² = 11310935238122997362, which contains 22 as substring.

Together with 2378122711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2378124709) 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, 1189061354 + 1189061355.

It is an arithmetic number, because the mean of its divisors is an integer number (1189061355).

Almost surely, 2^2378122709 is an apocalyptic number.

It is an amenable number.

2378122709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2378122709 is an equidigital number, since it uses as much as digits as its factorization.

2378122709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 2378122709 is about 48765.9995181069. Note that the first 3 decimals coincide. The cubic root of 2378122709 is about 1334.7853150642.

The spelling of 2378122709 in words is "two billion, three hundred seventy-eight million, one hundred twenty-two thousand, seven hundred nine".