380720911 has 2 divisors, whose sum is σ = 380720912. Its totient is φ = 380720910.

The previous prime is 380720887. The next prime is 380720929. The reversal of 380720911 is 119027083.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 380720911 - 2⁹ = 380720399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380720941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190360455 + 190360456.

It is an arithmetic number, because the mean of its divisors is an integer number (190360456).

Almost surely, 2^380720911 is an apocalyptic number.

380720911 is a deficient number, since it is larger than the sum of its proper divisors (1).

380720911 is an equidigital number, since it uses as much as digits as its factorization.

380720911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 380720911 is about 19512.0709049552. The cubic root of 380720911 is about 724.7733963232.

Adding to 380720911 its reverse (119027083), we get a palindrome (499747994).

The spelling of 380720911 in words is "three hundred eighty million, seven hundred twenty thousand, nine hundred eleven".