199218148 has 12 divisors (see below), whose sum is σ = 356049792. Its totient is φ = 97489640.

The previous prime is 199218143. The next prime is 199218167. The reversal of 199218148 is 841812991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (199218143) 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, 529648 + ... + 530023.

It is an arithmetic number, because the mean of its divisors is an integer number (29670816).

Almost surely, 2^199218148 is an apocalyptic number.

It is an amenable number.

199218148 is a deficient number, since it is larger than the sum of its proper divisors (156831644).

199218148 is a wasteful number, since it uses less digits than its factorization.

199218148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059722 (or 1059720 counting only the distinct ones).

The product of its digits is 41472, while the sum is 43.

The square root of 199218148 is about 14114.4659126727. The cubic root of 199218148 is about 584.0405027579.

The spelling of 199218148 in words is "one hundred ninety-nine million, two hundred eighteen thousand, one hundred forty-eight".