19481394 has 8 divisors (see below), whose sum is σ = 38962800. Its totient is φ = 6493796.

The previous prime is 19481393. The next prime is 19481401. The reversal of 19481394 is 49318491.

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

19481394 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19481393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623444 + ... + 1623455.

It is an arithmetic number, because the mean of its divisors is an integer number (4870350).

Almost surely, 2^19481394 is an apocalyptic number.

19481394 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.

19481394 is a wasteful number, since it uses less digits than its factorization.

19481394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246904.

The product of its digits is 31104, while the sum is 39.

The square root of 19481394 is about 4413.7732157418. The cubic root of 19481394 is about 269.0749964789.

The spelling of 19481394 in words is "nineteen million, four hundred eighty-one thousand, three hundred ninety-four".