1455664453 has 4 divisors (see below), whose sum is σ = 1455744780. Its totient is φ = 1455584128.

The previous prime is 1455664447. The next prime is 1455664481. The reversal of 1455664453 is 3544665541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 1436637409 = 4362^2 + 37903^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455664453 - 2¹³ = 1455656261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455664403) 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, 1263 + ... + 53971.

It is an arithmetic number, because the mean of its divisors is an integer number (363936195).

Almost surely, 2^1455664453 is an apocalyptic number.

It is an amenable number.

1455664453 is a deficient number, since it is larger than the sum of its proper divisors (80327).

1455664453 is an equidigital number, since it uses as much as digits as its factorization.

1455664453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80326.

The product of its digits is 864000, while the sum is 43.

The square root of 1455664453 is about 38153.1709429243. The cubic root of 1455664453 is about 1133.3231470730.

The spelling of 1455664453 in words is "one billion, four hundred fifty-five million, six hundred sixty-four thousand, four hundred fifty-three".