380254991 has 2 divisors, whose sum is σ = 380254992. Its totient is φ = 380254990.

The previous prime is 380254981. The next prime is 380254993. The reversal of 380254991 is 199452083.

It is a strong prime.

It is an emirp because it is prime and its reverse (199452083) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380254991 is a prime.

Together with 380254993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380254993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190127495 + 190127496.

It is an arithmetic number, because the mean of its divisors is an integer number (190127496).

Almost surely, 2^380254991 is an apocalyptic number.

380254991 is a deficient number, since it is larger than the sum of its proper divisors (1).

380254991 is an equidigital number, since it uses as much as digits as its factorization.

380254991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 380254991 is about 19500.1279739390. The cubic root of 380254991 is about 724.4776203742.

The spelling of 380254991 in words is "three hundred eighty million, two hundred fifty-four thousand, nine hundred ninety-one".