19480973 has 2 divisors, whose sum is σ = 19480974. Its totient is φ = 19480972.

The previous prime is 19480969. The next prime is 19480991. The reversal of 19480973 is 37908491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 1857769 = 4198^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 19480973 - 2² = 19480969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19480973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19480873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9740486 + 9740487.

It is an arithmetic number, because the mean of its divisors is an integer number (9740487).

Almost surely, 2^19480973 is an apocalyptic number.

It is an amenable number.

19480973 is a deficient number, since it is larger than the sum of its proper divisors (1).

19480973 is an equidigital number, since it uses as much as digits as its factorization.

19480973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 19480973 is about 4413.7255238630. The cubic root of 19480973 is about 269.0730581955.

The spelling of 19480973 in words is "nineteen million, four hundred eighty thousand, nine hundred seventy-three".