378929178091 has 2 divisors, whose sum is σ = 378929178092. Its totient is φ = 378929178090.

The previous prime is 378929178059. The next prime is 378929178119. The reversal of 378929178091 is 190871929873.

It is a strong prime.

It is an emirp because it is prime and its reverse (190871929873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378929178091 - 2⁵ = 378929178059 is a prime.

It is not a weakly prime, because it can be changed into another prime (378929178391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189464589045 + 189464589046.

It is an arithmetic number, because the mean of its divisors is an integer number (189464589046).

Almost surely, 2^378929178091 is an apocalyptic number.

378929178091 is a deficient number, since it is larger than the sum of its proper divisors (1).

378929178091 is an equidigital number, since it uses as much as digits as its factorization.

378929178091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 64.

The spelling of 378929178091 in words is "three hundred seventy-eight billion, nine hundred twenty-nine million, one hundred seventy-eight thousand, ninety-one".