378313811 has 2 divisors, whose sum is σ = 378313812. Its totient is φ = 378313810.

The previous prime is 378313777. The next prime is 378313849. The reversal of 378313811 is 118313873.

It is a weak prime.

It is an emirp because it is prime and its reverse (118313873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378313811 - 2¹⁴ = 378297427 is a prime.

It is equal to p_20239991 and since 378313811 and 20239991 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (378313861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189156905 + 189156906.

It is an arithmetic number, because the mean of its divisors is an integer number (189156906).

Almost surely, 2^378313811 is an apocalyptic number.

378313811 is a deficient number, since it is larger than the sum of its proper divisors (1).

378313811 is an equidigital number, since it uses as much as digits as its factorization.

378313811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 378313811 is about 19450.2907690348. The cubic root of 378313811 is about 723.2427109859.

The spelling of 378313811 in words is "three hundred seventy-eight million, three hundred thirteen thousand, eight hundred eleven".