19480897 has 4 divisors (see below), whose sum is σ = 19564740. Its totient is φ = 19397056.

The previous prime is 19480873. The next prime is 19480919. The reversal of 19480897 is 79808491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4704561 + 14776336 = 2169^2 + 3844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19480897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19480817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41572 + ... + 42037.

It is an arithmetic number, because the mean of its divisors is an integer number (4891185).

Almost surely, 2^19480897 is an apocalyptic number.

It is an amenable number.

19480897 is a deficient number, since it is larger than the sum of its proper divisors (83843).

19480897 is an equidigital number, since it uses as much as digits as its factorization.

19480897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83842.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 19480897 is about 4413.7169143478. The cubic root of 19480897 is about 269.0727082886.

The spelling of 19480897 in words is "nineteen million, four hundred eighty thousand, eight hundred ninety-seven".