19066945 has 8 divisors (see below), whose sum is σ = 24226344. Its totient is φ = 14356224.

The previous prime is 19066933. The next prime is 19066961. The reversal of 19066945 is 54966091.

It can be written as a sum of positive squares in 4 ways, for example, as 8334769 + 10732176 = 2887^2 + 3276^2 .

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 19066945 - 2²³ = 10678337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19066898 and 19066907.

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, 112074 + ... + 112243.

It is an arithmetic number, because the mean of its divisors is an integer number (3028293).

Almost surely, 2^19066945 is an apocalyptic number.

It is an amenable number.

19066945 is a deficient number, since it is larger than the sum of its proper divisors (5159399).

19066945 is a wasteful number, since it uses less digits than its factorization.

19066945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224339.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 19066945 is about 4366.5713093914. The cubic root of 19066945 is about 267.1531942663.

The spelling of 19066945 in words is "nineteen million, sixty-six thousand, nine hundred forty-five".