380619991 has 2 divisors, whose sum is σ = 380619992. Its totient is φ = 380619990.

The previous prime is 380619973. The next prime is 380620007. The reversal of 380619991 is 199916083.

It is a strong prime.

It is an emirp because it is prime and its reverse (199916083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380619991 - 2¹³ = 380611799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380619971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190309995 + 190309996.

It is an arithmetic number, because the mean of its divisors is an integer number (190309996).

Almost surely, 2^380619991 is an apocalyptic number.

380619991 is a deficient number, since it is larger than the sum of its proper divisors (1).

380619991 is an equidigital number, since it uses as much as digits as its factorization.

380619991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 380619991 is about 19509.4846420914. The cubic root of 380619991 is about 724.7093506378.

The spelling of 380619991 in words is "three hundred eighty million, six hundred nineteen thousand, nine hundred ninety-one".