19470486138 has 128 divisors (see below), whose sum is σ = 43337908224. Its totient is φ = 5804697600.

The previous prime is 19470486127. The next prime is 19470486143. The reversal of 19470486138 is 83168407491.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62205870 + ... + 62206182.

It is an arithmetic number, because the mean of its divisors is an integer number (338577408).

Almost surely, 2^19470486138 is an apocalyptic number.

19470486138 is an abundant number, since it is smaller than the sum of its proper divisors (23867422086).

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

19470486138 is a wasteful number, since it uses less digits than its factorization.

19470486138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 19470486138 in words is "nineteen billion, four hundred seventy million, four hundred eighty-six thousand, one hundred thirty-eight".