2378129729 has 2 divisors, whose sum is σ = 2378129730. Its totient is φ = 2378129728.

The previous prime is 2378129603. The next prime is 2378129771. The reversal of 2378129729 is 9279218732.

2378129729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1887728704 + 490401025 = 43448^2 + 22145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2378129729 is a prime.

It is a super-2 number, since 2×2378129729² = 11311002015907226882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2378189729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1189064864 + 1189064865.

It is an arithmetic number, because the mean of its divisors is an integer number (1189064865).

Almost surely, 2^2378129729 is an apocalyptic number.

It is an amenable number.

2378129729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2378129729 is an equidigital number, since it uses as much as digits as its factorization.

2378129729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 2378129729 is about 48766.0714944315. The cubic root of 2378129729 is about 1334.7866284508.

The spelling of 2378129729 in words is "two billion, three hundred seventy-eight million, one hundred twenty-nine thousand, seven hundred twenty-nine".