1330656523 has 4 divisors (see below), whose sum is σ = 1520750320. Its totient is φ = 1140562728.

The previous prime is 1330656499. The next prime is 1330656529. The reversal of 1330656523 is 3256560331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3256560331 = 797 ⋅4086023.

It is a cyclic number.

It is not a de Polignac number, because 1330656523 - 2¹³ = 1330648331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330656529) 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, 95046888 + ... + 95046901.

It is an arithmetic number, because the mean of its divisors is an integer number (380187580).

Almost surely, 2^1330656523 is an apocalyptic number.

1330656523 is a deficient number, since it is larger than the sum of its proper divisors (190093797).

1330656523 is an equidigital number, since it uses as much as digits as its factorization.

1330656523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190093796.

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 1330656523 is about 36478.1650168974. The cubic root of 1330656523 is about 1099.9053700964.

The spelling of 1330656523 in words is "one billion, three hundred thirty million, six hundred fifty-six thousand, five hundred twenty-three".