378283117 has 2 divisors, whose sum is σ = 378283118. Its totient is φ = 378283116.

The previous prime is 378283069. The next prime is 378283123. The reversal of 378283117 is 711382873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191933316 + 186349801 = 13854^2 + 13651^2 .

It is a cyclic number.

It is not a de Polignac number, because 378283117 - 2¹⁵ = 378250349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378283117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378283187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189141558 + 189141559.

It is an arithmetic number, because the mean of its divisors is an integer number (189141559).

Almost surely, 2^378283117 is an apocalyptic number.

It is an amenable number.

378283117 is a deficient number, since it is larger than the sum of its proper divisors (1).

378283117 is an equidigital number, since it uses as much as digits as its factorization.

378283117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 378283117 is about 19449.5017159823. The cubic root of 378283117 is about 723.2231506707.

The spelling of 378283117 in words is "three hundred seventy-eight million, two hundred eighty-three thousand, one hundred seventeen".