184021981019 has 4 divisors (see below), whose sum is σ = 184032610320. Its totient is φ = 184011351720.

The previous prime is 184021980973. The next prime is 184021981049. The reversal of 184021981019 is 910189120481.

184021981019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910189120481 = 157 ⋅5797382933.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-184021981019 is a prime.

It is a super-2 number, since 2×184021981019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (184021981049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5288639 + ... + 5323320.

It is an arithmetic number, because the mean of its divisors is an integer number (46008152580).

Almost surely, 2^184021981019 is an apocalyptic number.

184021981019 is a deficient number, since it is larger than the sum of its proper divisors (10629301).

184021981019 is a wasteful number, since it uses less digits than its factorization.

184021981019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629300.

The product of its (nonzero) digits is 41472, while the sum is 44.

The spelling of 184021981019 in words is "one hundred eighty-four billion, twenty-one million, nine hundred eighty-one thousand, nineteen".