380117509 has 2 divisors, whose sum is σ = 380117510. Its totient is φ = 380117508.

The previous prime is 380117473. The next prime is 380117531. The reversal of 380117509 is 905711083.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263153284 + 116964225 = 16222^2 + 10815^2 .

It is an emirp because it is prime and its reverse (905711083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380117509 - 2¹⁵ = 380084741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380117579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190058754 + 190058755.

It is an arithmetic number, because the mean of its divisors is an integer number (190058755).

Almost surely, 2^380117509 is an apocalyptic number.

It is an amenable number.

380117509 is a deficient number, since it is larger than the sum of its proper divisors (1).

380117509 is an equidigital number, since it uses as much as digits as its factorization.

380117509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 380117509 is about 19496.6024988971. The cubic root of 380117509 is about 724.3902977084.

The spelling of 380117509 in words is "three hundred eighty million, one hundred seventeen thousand, five hundred nine".