19495012 has 6 divisors (see below), whose sum is σ = 34116278. Its totient is φ = 9747504.

The previous prime is 19495009. The next prime is 19495013. The reversal of 19495012 is 21059491.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 1313316 = 4264^2 + 1146^2 .

It is not an unprimeable number, because it can be changed into a prime (19495013) by changing a digit.

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 as a sum of consecutive naturals, namely, 2436873 + ... + 2436880.

Almost surely, 2^19495012 is an apocalyptic number.

It is an amenable number.

19495012 is a deficient number, since it is larger than the sum of its proper divisors (14621266).

19495012 is a wasteful number, since it uses less digits than its factorization.

19495012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873757 (or 4873755 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 19495012 is about 4415.3156172577. The cubic root of 19495012 is about 269.1376786776.

The spelling of 19495012 in words is "nineteen million, four hundred ninety-five thousand, twelve".