19308478463 has 16 divisors (see below), whose sum is σ = 19793185440. Its totient is φ = 18831661056.

The previous prime is 19308478451. The next prime is 19308478489. The reversal of 19308478463 is 36487480391.

It is a cyclic number.

It is not a de Polignac number, because 19308478463 - 2²⁶ = 19241369599 is a prime.

It is a super-2 number, since 2×19308478463² (a number of 21 digits) contains 22 as substring.

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 Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19308478663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1841945 + ... + 1852397.

It is an arithmetic number, because the mean of its divisors is an integer number (1237074090).

Almost surely, 2^19308478463 is an apocalyptic number.

19308478463 is a deficient number, since it is larger than the sum of its proper divisors (484706977).

19308478463 is a wasteful number, since it uses less digits than its factorization.

19308478463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10826.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 19308478463 in words is "nineteen billion, three hundred eight million, four hundred seventy-eight thousand, four hundred sixty-three".