19849450 has 24 divisors (see below), whose sum is σ = 37372608. Its totient is φ = 7842480.

The previous prime is 19849447. The next prime is 19849451. The reversal of 19849450 is 5494891.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19849451) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 1759 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (1557192).

Almost surely, 2^19849450 is an apocalyptic number.

19849450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19849450 is a deficient number, since it is larger than the sum of its proper divisors (17523158).

19849450 is a wasteful number, since it uses less digits than its factorization.

19849450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878 (or 4873 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 19849450 is about 4455.2721577924. The cubic root of 19849450 is about 270.7589528814.

The spelling of 19849450 in words is "nineteen million, eight hundred forty-nine thousand, four hundred fifty".