478268453 has 4 divisors (see below), whose sum is σ = 515058348. Its totient is φ = 441478560.

The previous prime is 478268447. The next prime is 478268459. The reversal of 478268453 is 354862874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354862874 = 2 ⋅177431437.

It is an interprime number because it is at equal distance from previous prime (478268447) and next prime (478268459).

It can be written as a sum of positive squares in 2 ways, for example, as 310358689 + 167909764 = 17617^2 + 12958^2 .

It is a cyclic number.

It is not a de Polignac number, because 478268453 - 2¹⁰ = 478267429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 478268398 and 478268407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478268459) 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, 18394928 + ... + 18394953.

It is an arithmetic number, because the mean of its divisors is an integer number (128764587).

Almost surely, 2^478268453 is an apocalyptic number.

It is an amenable number.

478268453 is a deficient number, since it is larger than the sum of its proper divisors (36789895).

478268453 is a wasteful number, since it uses less digits than its factorization.

478268453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36789894.

The product of its digits is 1290240, while the sum is 47.

The square root of 478268453 is about 21869.3496245316. The cubic root of 478268453 is about 782.0308969942.

The spelling of 478268453 in words is "four hundred seventy-eight million, two hundred sixty-eight thousand, four hundred fifty-three".