19470138 has 8 divisors (see below), whose sum is σ = 38940288. Its totient is φ = 6490044.

The previous prime is 19470127. The next prime is 19470161. The reversal of 19470138 is 83107491.

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

19470138 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19470099 and 19470108.

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, 1622506 + ... + 1622517.

It is an arithmetic number, because the mean of its divisors is an integer number (4867536).

Almost surely, 2^19470138 is an apocalyptic number.

19470138 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.

19470138 is a wasteful number, since it uses less digits than its factorization.

19470138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245028.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 19470138 is about 4412.4979320108. The cubic root of 19470138 is about 269.0231642596.

The spelling of 19470138 in words is "nineteen million, four hundred seventy thousand, one hundred thirty-eight".