1320579835 has 4 divisors (see below), whose sum is σ = 1584695808. Its totient is φ = 1056463864.

The previous prime is 1320579833. The next prime is 1320579917. The reversal of 1320579835 is 5389750231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320579835 - 2¹ = 1320579833 is a prime.

It is a super-2 number, since 2×1320579835² = 3487862201217254450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320579791 and 1320579800.

It is not an unprimeable number, because it can be changed into a prime (1320579833) 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, 132057979 + ... + 132057988.

It is an arithmetic number, because the mean of its divisors is an integer number (396173952).

Almost surely, 2^1320579835 is an apocalyptic number.

1320579835 is a deficient number, since it is larger than the sum of its proper divisors (264115973).

1320579835 is an equidigital number, since it uses as much as digits as its factorization.

1320579835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264115972.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 1320579835 is about 36339.7830896113. The cubic root of 1320579835 is about 1097.1219073176.

The spelling of 1320579835 in words is "one billion, three hundred twenty million, five hundred seventy-nine thousand, eight hundred thirty-five".