19268945 has 32 divisors (see below), whose sum is σ = 25660800. Its totient is φ = 13837824.

The previous prime is 19268941. The next prime is 19268947. The reversal of 19268945 is 54986291.

It is a cyclic number.

It is not a de Polignac number, because 19268945 - 2² = 19268941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19268896 and 19268905.

It is not an unprimeable number, because it can be changed into a prime (19268941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216461 + ... + 216549.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^19268945 is an apocalyptic number.

It is an amenable number.

19268945 is a deficient number, since it is larger than the sum of its proper divisors (6391855).

19268945 is a wasteful number, since it uses less digits than its factorization.

19268945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its digits is 155520, while the sum is 44.

The square root of 19268945 is about 4389.6406458844. The cubic root of 19268945 is about 268.0933114221.

The spelling of 19268945 in words is "nineteen million, two hundred sixty-eight thousand, nine hundred forty-five".