19894475 has 12 divisors (see below), whose sum is σ = 24916560. Its totient is φ = 15756000.

The previous prime is 19894447. The next prime is 19894487. The reversal of 19894475 is 57449891.

It is not a de Polignac number, because 19894475 - 2⁶ = 19894411 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1415 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (2076380).

Almost surely, 2^19894475 is an apocalyptic number.

19894475 is a deficient number, since it is larger than the sum of its proper divisors (5022085).

19894475 is a wasteful number, since it uses less digits than its factorization.

19894475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990 (or 7985 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 19894475 is about 4460.3222977718. The cubic root of 19894475 is about 270.9635213673.

The spelling of 19894475 in words is "nineteen million, eight hundred ninety-four thousand, four hundred seventy-five".