380910643 has 2 divisors, whose sum is σ = 380910644. Its totient is φ = 380910642.

The previous prime is 380910571. The next prime is 380910661. The reversal of 380910643 is 346019083.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380910643 is a prime.

It is equal to p_20371669 and since 380910643 and 20371669 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 380910599 and 380910608.

It is not a weakly prime, because it can be changed into another prime (380910443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190455321 + 190455322.

It is an arithmetic number, because the mean of its divisors is an integer number (190455322).

Almost surely, 2^380910643 is an apocalyptic number.

380910643 is a deficient number, since it is larger than the sum of its proper divisors (1).

380910643 is an equidigital number, since it uses as much as digits as its factorization.

380910643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 380910643 is about 19516.9322128248. The cubic root of 380910643 is about 724.8937731007.

The spelling of 380910643 in words is "three hundred eighty million, nine hundred ten thousand, six hundred forty-three".