1478494522409 has 2 divisors, whose sum is σ = 1478494522410. Its totient is φ = 1478494522408.

The previous prime is 1478494522229. The next prime is 1478494522433. The reversal of 1478494522409 is 9042254948741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1183900677184 + 294593845225 = 1088072^2 + 542765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1478494522409 - 2²⁰ = 1478493473833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1478494522469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739247261204 + 739247261205.

It is an arithmetic number, because the mean of its divisors is an integer number (739247261205).

Almost surely, 2^{1478494522409} is an apocalyptic number.

It is an amenable number.

1478494522409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478494522409 is an equidigital number, since it uses as much as digits as its factorization.

1478494522409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320, while the sum is 59.

The spelling of 1478494522409 in words is "one trillion, four hundred seventy-eight billion, four hundred ninety-four million, five hundred twenty-two thousand, four hundred nine".