378768539 has 2 divisors, whose sum is σ = 378768540. Its totient is φ = 378768538.

The previous prime is 378768527. The next prime is 378768541. The reversal of 378768539 is 935867873.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (935867873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378768539 - 2⁸ = 378768283 is a prime.

It is a super-2 number, since 2×378768539² = 286931212272389042, which contains 22 as substring.

Together with 378768541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378768239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189384269 + 189384270.

It is an arithmetic number, because the mean of its divisors is an integer number (189384270).

Almost surely, 2^378768539 is an apocalyptic number.

378768539 is a deficient number, since it is larger than the sum of its proper divisors (1).

378768539 is an equidigital number, since it uses as much as digits as its factorization.

378768539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The square root of 378768539 is about 19461.9767495494. The cubic root of 378768539 is about 723.5323708931.

The spelling of 378768539 in words is "three hundred seventy-eight million, seven hundred sixty-eight thousand, five hundred thirty-nine".