84081019 has 8 divisors (see below), whose sum is σ = 91862640. Its totient is φ = 76322400.

The previous prime is 84081013. The next prime is 84081071. The reversal of 84081019 is 91018048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84081019 - 2⁵ = 84080987 is a prime.

It is a super-2 number, since 2×84081019² = 14139235512156722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84081013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2409 + ... + 13189.

It is an arithmetic number, because the mean of its divisors is an integer number (11482830).

Almost surely, 2^84081019 is an apocalyptic number.

84081019 is a deficient number, since it is larger than the sum of its proper divisors (7781621).

84081019 is a wasteful number, since it uses less digits than its factorization.

84081019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 84081019 is about 9169.5702734643. The cubic root of 84081019 is about 438.0926720225.

The spelling of 84081019 in words is "eighty-four million, eighty-one thousand, nineteen".