19840196 has 6 divisors (see below), whose sum is σ = 34720350. Its totient is φ = 9920096.

The previous prime is 19840153. The next prime is 19840211. The reversal of 19840196 is 69104891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 215296 = 4430^2 + 464^2 .

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, 2480021 + ... + 2480028.

It is an arithmetic number, because the mean of its divisors is an integer number (5786725).

Almost surely, 2^19840196 is an apocalyptic number.

It is an amenable number.

19840196 is a deficient number, since it is larger than the sum of its proper divisors (14880154).

19840196 is a wasteful number, since it uses less digits than its factorization.

19840196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960053 (or 4960051 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 19840196 is about 4454.2334918592. The cubic root of 19840196 is about 270.7168695520.

The spelling of 19840196 in words is "nineteen million, eight hundred forty thousand, one hundred ninety-six".