83730019 has 2 divisors, whose sum is σ = 83730020. Its totient is φ = 83730018.

The previous prime is 83730011. The next prime is 83730037. The reversal of 83730019 is 91003738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83730019 - 2³ = 83730011 is a prime.

It is a super-2 number, since 2×83730019² = 14021432163480722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83730011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41865009 + 41865010.

It is an arithmetic number, because the mean of its divisors is an integer number (41865010).

Almost surely, 2^83730019 is an apocalyptic number.

83730019 is a deficient number, since it is larger than the sum of its proper divisors (1).

83730019 is an equidigital number, since it uses as much as digits as its factorization.

83730019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 83730019 is about 9150.4108650923. The cubic root of 83730019 is about 437.4822092357.

The spelling of 83730019 in words is "eighty-three million, seven hundred thirty thousand, nineteen".