380540243 has 2 divisors, whose sum is σ = 380540244. Its totient is φ = 380540242.

The previous prime is 380540231. The next prime is 380540249. The reversal of 380540243 is 342045083.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 380540243 - 2⁶ = 380540179 is a prime.

It is a Chen prime.

It is equal to p_20352863 and since 380540243 and 20352863 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 (380540249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190270121 + 190270122.

It is an arithmetic number, because the mean of its divisors is an integer number (190270122).

Almost surely, 2^380540243 is an apocalyptic number.

380540243 is a deficient number, since it is larger than the sum of its proper divisors (1).

380540243 is an equidigital number, since it uses as much as digits as its factorization.

380540243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 380540243 is about 19507.4407086117. The cubic root of 380540243 is about 724.6587330844.

The spelling of 380540243 in words is "three hundred eighty million, five hundred forty thousand, two hundred forty-three".