16380043 has 2 divisors, whose sum is σ = 16380044. Its totient is φ = 16380042.

The previous prime is 16380031. The next prime is 16380073. The reversal of 16380043 is 34008361.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16380043 is a prime.

It is not a weakly prime, because it can be changed into another prime (16380073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190021 + 8190022.

It is an arithmetic number, because the mean of its divisors is an integer number (8190022).

Almost surely, 2^16380043 is an apocalyptic number.

16380043 is a deficient number, since it is larger than the sum of its proper divisors (1).

16380043 is an equidigital number, since it uses as much as digits as its factorization.

16380043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16380043 is about 4047.2265812529. The cubic root of 16380043 is about 253.9637195789.

The spelling of 16380043 in words is "sixteen million, three hundred eighty thousand, forty-three".