19494385 has 8 divisors (see below), whose sum is σ = 23481216. Its totient is φ = 15536880.

The previous prime is 19494337. The next prime is 19494389. The reversal of 19494385 is 58349491.

It is a happy number.

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

It is not a de Polignac number, because 19494385 - 2¹⁹ = 18970097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19494389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5839 + ... + 8548.

It is an arithmetic number, because the mean of its divisors is an integer number (2935152).

Almost surely, 2^19494385 is an apocalyptic number.

It is an amenable number.

19494385 is a deficient number, since it is larger than the sum of its proper divisors (3986831).

19494385 is a wasteful number, since it uses less digits than its factorization.

19494385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14663.

The product of its digits is 155520, while the sum is 43.

The square root of 19494385 is about 4415.2446138351. The cubic root of 19494385 is about 269.1347933048.

The spelling of 19494385 in words is "nineteen million, four hundred ninety-four thousand, three hundred eighty-five".