1320005634 has 8 divisors (see below), whose sum is σ = 2640011280. Its totient is φ = 440001876.

The previous prime is 1320005633. The next prime is 1320005683. The reversal of 1320005634 is 4365000231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1320005634 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1320005633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110000464 + ... + 110000475.

It is an arithmetic number, because the mean of its divisors is an integer number (330001410).

Almost surely, 2^1320005634 is an apocalyptic number.

1320005634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320005634 is a wasteful number, since it uses less digits than its factorization.

1320005634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220000944.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1320005634 is about 36331.8817844603. The cubic root of 1320005634 is about 1096.9628711611.

Adding to 1320005634 its reverse (4365000231), we get a palindrome (5685005865).

The spelling of 1320005634 in words is "one billion, three hundred twenty million, five thousand, six hundred thirty-four".