340220018 has 4 divisors (see below), whose sum is σ = 510330030. Its totient is φ = 170110008.

The previous prime is 340220003. The next prime is 340220051. The reversal of 340220018 is 810022043.

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., 337714129 + 2505889 = 18377^2 + 1583^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85055003 + ... + 85055006.

Almost surely, 2^340220018 is an apocalyptic number.

340220018 is a deficient number, since it is larger than the sum of its proper divisors (170110012).

340220018 is a wasteful number, since it uses less digits than its factorization.

340220018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170110011.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 340220018 is about 18445.0540254020. The cubic root of 340220018 is about 698.1037234714.

The spelling of 340220018 in words is "three hundred forty million, two hundred twenty thousand, eighteen".