1328750635 has 4 divisors (see below), whose sum is σ = 1594500768. Its totient is φ = 1063000504.

The previous prime is 1328750627. The next prime is 1328750639. The reversal of 1328750635 is 5360578231.

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 1328750635 - 2³ = 1328750627 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328750639) 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, 132875059 + ... + 132875068.

It is an arithmetic number, because the mean of its divisors is an integer number (398625192).

Almost surely, 2^1328750635 is an apocalyptic number.

1328750635 is a deficient number, since it is larger than the sum of its proper divisors (265750133).

1328750635 is an equidigital number, since it uses as much as digits as its factorization.

1328750635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265750132.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1328750635 is about 36452.0319735402. The cubic root of 1328750635 is about 1099.3799908212.

The spelling of 1328750635 in words is "one billion, three hundred twenty-eight million, seven hundred fifty thousand, six hundred thirty-five".