380857019 has 2 divisors, whose sum is σ = 380857020. Its totient is φ = 380857018.

The previous prime is 380857007. The next prime is 380857049. The reversal of 380857019 is 910758083.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 380857019 - 2²⁸ = 112421563 is a prime.

It is a super-2 number, since 2×380857019² = 290104137843132722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_20368967 and since 380857019 and 20368967 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (380857049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190428509 + 190428510.

It is an arithmetic number, because the mean of its divisors is an integer number (190428510).

Almost surely, 2^380857019 is an apocalyptic number.

380857019 is a deficient number, since it is larger than the sum of its proper divisors (1).

380857019 is an equidigital number, since it uses as much as digits as its factorization.

380857019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 380857019 is about 19515.5583829928. The cubic root of 380857019 is about 724.8597550367.

The spelling of 380857019 in words is "three hundred eighty million, eight hundred fifty-seven thousand, nineteen".