19676045 has 8 divisors (see below), whose sum is σ = 24249624. Its totient is φ = 15315264.

The previous prime is 19676011. The next prime is 19676047. The reversal of 19676045 is 54067691.

It can be written as a sum of positive squares in 4 ways, for example, as 12348196 + 7327849 = 3514^2 + 2707^2 .

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 19676045 - 2¹⁶ = 19610509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19676047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52994 + ... + 53363.

It is an arithmetic number, because the mean of its divisors is an integer number (3031203).

Almost surely, 2^19676045 is an apocalyptic number.

It is an amenable number.

19676045 is a deficient number, since it is larger than the sum of its proper divisors (4573579).

19676045 is a wasteful number, since it uses less digits than its factorization.

19676045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106399.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 19676045 is about 4435.7688172401. The cubic root of 19676045 is about 269.9681946989.

The spelling of 19676045 in words is "nineteen million, six hundred seventy-six thousand, forty-five".