378789511 has 2 divisors, whose sum is σ = 378789512. Its totient is φ = 378789510.

The previous prime is 378789487. The next prime is 378789517. The reversal of 378789511 is 115987873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378789511 - 2¹⁷ = 378658439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378789517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189394755 + 189394756.

It is an arithmetic number, because the mean of its divisors is an integer number (189394756).

Almost surely, 2^378789511 is an apocalyptic number.

378789511 is a deficient number, since it is larger than the sum of its proper divisors (1).

378789511 is an equidigital number, since it uses as much as digits as its factorization.

378789511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 49.

The square root of 378789511 is about 19462.5155362815. The cubic root of 378789511 is about 723.5457243789.

The spelling of 378789511 in words is "three hundred seventy-eight million, seven hundred eighty-nine thousand, five hundred eleven".