380780789 has 2 divisors, whose sum is σ = 380780790. Its totient is φ = 380780788.

The previous prime is 380780731. The next prime is 380780833. The reversal of 380780789 is 987087083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289578289 + 91202500 = 17017^2 + 9550^2 .

It is an emirp because it is prime and its reverse (987087083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380780789 - 2¹⁶ = 380715253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380780089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190390394 + 190390395.

It is an arithmetic number, because the mean of its divisors is an integer number (190390395).

Almost surely, 2^380780789 is an apocalyptic number.

It is an amenable number.

380780789 is a deficient number, since it is larger than the sum of its proper divisors (1).

380780789 is an equidigital number, since it uses as much as digits as its factorization.

380780789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 380780789 is about 19513.6052281479. The cubic root of 380780789 is about 724.8113906520.

The spelling of 380780789 in words is "three hundred eighty million, seven hundred eighty thousand, seven hundred eighty-nine".