19438407418 has 16 divisors (see below), whose sum is σ = 29872979136. Its totient is φ = 9480814560.

The previous prime is 19438407409. The next prime is 19438407451. The reversal of 19438407418 is 81470483491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828355 + ... + 851497.

It is an arithmetic number, because the mean of its divisors is an integer number (1867061196).

Almost surely, 2^19438407418 is an apocalyptic number.

19438407418 is a deficient number, since it is larger than the sum of its proper divisors (10434571718).

19438407418 is a wasteful number, since it uses less digits than its factorization.

19438407418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33429.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 19438407418 in words is "nineteen billion, four hundred thirty-eight million, four hundred seven thousand, four hundred eighteen".