19434435078 has 8 divisors (see below), whose sum is σ = 38868870168. Its totient is φ = 6478145024.

The previous prime is 19434435047. The next prime is 19434435103. The reversal of 19434435078 is 87053443491.

It is a sphenic number, since it is the product of 3 distinct primes.

19434435078 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619536251 + ... + 1619536262.

It is an arithmetic number, because the mean of its divisors is an integer number (4858608771).

Almost surely, 2^19434435078 is an apocalyptic number.

19434435078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19434435078 is a wasteful number, since it uses less digits than its factorization.

19434435078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239072518.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 19434435078 in words is "nineteen billion, four hundred thirty-four million, four hundred thirty-five thousand, seventy-eight".