19934045 has 4 divisors (see below), whose sum is σ = 23920860. Its totient is φ = 15947232.

The previous prime is 19934039. The next prime is 19934053. The reversal of 19934045 is 54043991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54043991 = 43 ⋅1256837.

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 15155449 = 2186^2 + 3893^2 .

It is a cyclic number.

It is not a de Polignac number, because 19934045 - 2⁸ = 19933789 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19933996 and 19934014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993400 + ... + 1993409.

It is an arithmetic number, because the mean of its divisors is an integer number (5980215).

Almost surely, 2^19934045 is an apocalyptic number.

It is an amenable number.

19934045 is a deficient number, since it is larger than the sum of its proper divisors (3986815).

19934045 is an equidigital number, since it uses as much as digits as its factorization.

19934045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986814.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 19934045 is about 4464.7558723854. The cubic root of 19934045 is about 271.1430507039.

The spelling of 19934045 in words is "nineteen million, nine hundred thirty-four thousand, forty-five".