19147045 has 8 divisors (see below), whose sum is σ = 23410296. Its totient is φ = 15028416.

The previous prime is 19147027. The next prime is 19147069. The reversal of 19147045 is 54074191.

It can be written as a sum of positive squares in 4 ways, for example, as 2614689 + 16532356 = 1617^2 + 4066^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19147045 - 2⁷ = 19146917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19146998 and 19147016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35862 + ... + 36391.

It is an arithmetic number, because the mean of its divisors is an integer number (2926287).

Almost surely, 2^19147045 is an apocalyptic number.

It is an amenable number.

19147045 is a deficient number, since it is larger than the sum of its proper divisors (4263251).

19147045 is an equidigital number, since it uses as much as digits as its factorization.

19147045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72311.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 19147045 is about 4375.7336527718. The cubic root of 19147045 is about 267.5267740400.

The spelling of 19147045 in words is "nineteen million, one hundred forty-seven thousand, forty-five".