19448718 has 24 divisors (see below), whose sum is σ = 40204584. Its totient is φ = 6271920.

The previous prime is 19448683. The next prime is 19448729. The reversal of 19448718 is 81784491.

It is a self number, because there is not a number n which added to its sum of digits gives 19448718.

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 11 ways as a sum of consecutive naturals, for example, 4080 + ... + 7452.

It is an arithmetic number, because the mean of its divisors is an integer number (1675191).

Almost surely, 2^19448718 is an apocalyptic number.

19448718 is an abundant number, since it is smaller than the sum of its proper divisors (20755866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19448718 is a wasteful number, since it uses less digits than its factorization.

19448718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440 (or 3409 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 19448718 is about 4410.0700674706. The cubic root of 19448718 is about 268.9244731142.

The spelling of 19448718 in words is "nineteen million, four hundred forty-eight thousand, seven hundred eighteen".