19098034478 has 16 divisors (see below), whose sum is σ = 29426270064. Its totient is φ = 9289365120.

The previous prime is 19098034457. The next prime is 19098034507. The reversal of 19098034478 is 87443089091.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503933 + ... + 540503.

It is an arithmetic number, because the mean of its divisors is an integer number (1839141879).

Almost surely, 2^19098034478 is an apocalyptic number.

19098034478 is a deficient number, since it is larger than the sum of its proper divisors (10328235586).

19098034478 is a wasteful number, since it uses less digits than its factorization.

19098034478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43667.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 19098034478 in words is "nineteen billion, ninety-eight million, thirty-four thousand, four hundred seventy-eight".