19198012 has 12 divisors (see below), whose sum is σ = 33974640. Its totient is φ = 9490976.

The previous prime is 19197991. The next prime is 19198057. The reversal of 19198012 is 21089191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26608 + ... + 27319.

It is an arithmetic number, because the mean of its divisors is an integer number (2831220).

Almost surely, 2^19198012 is an apocalyptic number.

It is an amenable number.

19198012 is a deficient number, since it is larger than the sum of its proper divisors (14776628).

19198012 is a wasteful number, since it uses less digits than its factorization.

19198012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54020 (or 54018 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 19198012 is about 4381.5536057431. The cubic root of 19198012 is about 267.7639378201.

The spelling of 19198012 in words is "nineteen million, one hundred ninety-eight thousand, twelve".