19496945 has 16 divisors (see below), whose sum is σ = 26523840. Its totient is φ = 13639104.

The previous prime is 19496941. The next prime is 19496947. The reversal of 19496945 is 54969491.

It is a cyclic number.

It is not a de Polignac number, because 19496945 - 2² = 19496941 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 19496945.

It is not an unprimeable number, because it can be changed into a prime (19496941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6659 + ... + 9128.

It is an arithmetic number, because the mean of its divisors is an integer number (1657740).

Almost surely, 2^19496945 is an apocalyptic number.

It is an amenable number.

19496945 is a deficient number, since it is larger than the sum of its proper divisors (7026895).

19496945 is a wasteful number, since it uses less digits than its factorization.

19496945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15824.

The product of its digits is 349920, while the sum is 47.

The square root of 19496945 is about 4415.5345089808. The cubic root of 19496945 is about 269.1465737040.

The spelling of 19496945 in words is "nineteen million, four hundred ninety-six thousand, nine hundred forty-five".