18434140346 has 4 divisors (see below), whose sum is σ = 27651210522. Its totient is φ = 9217070172.

The previous prime is 18434140343. The next prime is 18434140367. The reversal of 18434140346 is 64304143481.

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

It can be written as a sum of positive squares in only one way, i.e., 10906669225 + 7527471121 = 104435^2 + 86761^2 .

It is not an unprimeable number, because it can be changed into a prime (18434140343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4608535085 + ... + 4608535088.

Almost surely, 2^18434140346 is an apocalyptic number.

18434140346 is a deficient number, since it is larger than the sum of its proper divisors (9217070176).

18434140346 is an equidigital number, since it uses as much as digits as its factorization.

18434140346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217070175.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 18434140346 in words is "eighteen billion, four hundred thirty-four million, one hundred forty thousand, three hundred forty-six".