18834040319 has 4 divisors (see below), whose sum is σ = 18837977880. Its totient is φ = 18830102760.

The previous prime is 18834040307. The next prime is 18834040333. The reversal of 18834040319 is 91304043881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18834040319 - 2⁸ = 18834040063 is a prime.

It is a super-2 number, since 2×18834040319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18834040219) 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, 1961597 + ... + 1971174.

It is an arithmetic number, because the mean of its divisors is an integer number (4709494470).

Almost surely, 2^18834040319 is an apocalyptic number.

18834040319 is a deficient number, since it is larger than the sum of its proper divisors (3937561).

18834040319 is an equidigital number, since it uses as much as digits as its factorization.

18834040319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937560.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 18834040319 in words is "eighteen billion, eight hundred thirty-four million, forty thousand, three hundred nineteen".