1948218194 has 16 divisors (see below), whose sum is σ = 3148528320. Its totient is φ = 898775760.

The previous prime is 1948218191. The next prime is 1948218199. The reversal of 1948218194 is 4918128491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1948218191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47147 + ... + 78225.

It is an arithmetic number, because the mean of its divisors is an integer number (196783020).

Almost surely, 2^1948218194 is an apocalyptic number.

1948218194 is a deficient number, since it is larger than the sum of its proper divisors (1200310126).

1948218194 is a wasteful number, since it uses less digits than its factorization.

1948218194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33505.

The product of its digits is 165888, while the sum is 47.

The square root of 1948218194 is about 44138.6247406962. The cubic root of 1948218194 is about 1248.9523368869.

The spelling of 1948218194 in words is "one billion, nine hundred forty-eight million, two hundred eighteen thousand, one hundred ninety-four".