1478440653 has 4 divisors (see below), whose sum is σ = 1971254208. Its totient is φ = 985627100.

The previous prime is 1478440651. The next prime is 1478440661. The reversal of 1478440653 is 3560448741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1478440653 - 2¹ = 1478440651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478440651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246406773 + ... + 246406778.

It is an arithmetic number, because the mean of its divisors is an integer number (492813552).

Almost surely, 2^1478440653 is an apocalyptic number.

It is an amenable number.

1478440653 is a deficient number, since it is larger than the sum of its proper divisors (492813555).

1478440653 is an equidigital number, since it uses as much as digits as its factorization.

1478440653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492813554.

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 1478440653 is about 38450.4961346404. The cubic root of 1478440653 is about 1139.2034686685.

The spelling of 1478440653 in words is "one billion, four hundred seventy-eight million, four hundred forty thousand, six hundred fifty-three".