378922508628749 has 2 divisors, whose sum is σ = 378922508628750. Its totient is φ = 378922508628748.

The previous prime is 378922508628617. The next prime is 378922508628757. The reversal of 378922508628749 is 947826805229873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199830934728649 + 179091573900100 = 14136157^2 + 13382510^2 .

It is a cyclic number.

It is not a de Polignac number, because 378922508628749 - 2²⁰ = 378922507580173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378922508628779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189461254314374 + 189461254314375.

It is an arithmetic number, because the mean of its divisors is an integer number (189461254314375).

Almost surely, 2^{378922508628749} is an apocalyptic number.

It is an amenable number.

378922508628749 is a deficient number, since it is larger than the sum of its proper divisors (1).

378922508628749 is an equidigital number, since it uses as much as digits as its factorization.

378922508628749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5852528640, while the sum is 80.

The spelling of 378922508628749 in words is "three hundred seventy-eight trillion, nine hundred twenty-two billion, five hundred eight million, six hundred twenty-eight thousand, seven hundred forty-nine".