19474145 has 12 divisors (see below), whose sum is σ = 24665940. Its totient is φ = 14757984.

The previous prime is 19474127. The next prime is 19474159. The reversal of 19474145 is 54147491.

It can be written as a sum of positive squares in 2 ways, for example, as 7907344 + 11566801 = 2812^2 + 3401^2 .

It is not a de Polignac number, because 19474145 - 2¹⁸ = 19212001 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3590 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (2055495).

Almost surely, 2^19474145 is an apocalyptic number.

It is an amenable number.

19474145 is a deficient number, since it is larger than the sum of its proper divisors (5191795).

19474145 is a wasteful number, since it uses less digits than its factorization.

19474145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10832 (or 10813 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 19474145 is about 4412.9519598563. The cubic root of 19474145 is about 269.0416181928.

The spelling of 19474145 in words is "nineteen million, four hundred seventy-four thousand, one hundred forty-five".