19481345 has 32 divisors (see below), whose sum is σ = 26756352. Its totient is φ = 13508352.

The previous prime is 19481339. The next prime is 19481353. The reversal of 19481345 is 54318491.

It is not a de Polignac number, because 19481345 - 2⁶ = 19481281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124007 + ... + 124163.

It is an arithmetic number, because the mean of its divisors is an integer number (836136).

Almost surely, 2^19481345 is an apocalyptic number.

It is an amenable number.

19481345 is a deficient number, since it is larger than the sum of its proper divisors (7275007).

19481345 is a wasteful number, since it uses less digits than its factorization.

19481345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 17280, while the sum is 35.

The square root of 19481345 is about 4413.7676649321. The cubic root of 19481345 is about 269.0747708844.

The spelling of 19481345 in words is "nineteen million, four hundred eighty-one thousand, three hundred forty-five".