1028813533 has 8 divisors (see below), whose sum is σ = 1149716736. Its totient is φ = 912472800.

The previous prime is 1028813521. The next prime is 1028813551. The reversal of 1028813533 is 3353188201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028813533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028813563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140141 + ... + 1141042.

It is an arithmetic number, because the mean of its divisors is an integer number (143714592).

Almost surely, 2^1028813533 is an apocalyptic number.

It is an amenable number.

1028813533 is a deficient number, since it is larger than the sum of its proper divisors (120903203).

1028813533 is a wasteful number, since it uses less digits than its factorization.

1028813533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281235.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1028813533 is about 32075.1232733407. The cubic root of 1028813533 is about 1009.5137132295.

The spelling of 1028813533 in words is "one billion, twenty-eight million, eight hundred thirteen thousand, five hundred thirty-three".