1379782189 has 2 divisors, whose sum is σ = 1379782190. Its totient is φ = 1379782188.

The previous prime is 1379782181. The next prime is 1379782273. The reversal of 1379782189 is 9812879731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 921608164 + 458174025 = 30358^2 + 21405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1379782189 - 2³ = 1379782181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1379782181) 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, 689891094 + 689891095.

It is an arithmetic number, because the mean of its divisors is an integer number (689891095).

Almost surely, 2^1379782189 is an apocalyptic number.

It is an amenable number.

1379782189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379782189 is an equidigital number, since it uses as much as digits as its factorization.

1379782189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 55.

The square root of 1379782189 is about 37145.4194888145. The cubic root of 1379782189 is about 1113.2777043113.

The spelling of 1379782189 in words is "one billion, three hundred seventy-nine million, seven hundred eighty-two thousand, one hundred eighty-nine".