1028609338 has 8 divisors (see below), whose sum is σ = 1545416532. Its totient is φ = 513470496.

The previous prime is 1028609291. The next prime is 1028609341. The reversal of 1028609338 is 8339068201.

It can be written as a sum of positive squares in 2 ways, for example, as 712729809 + 315879529 = 26697^2 + 17773^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1028609338.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415545 + ... + 418012.

Almost surely, 2^1028609338 is an apocalyptic number.

1028609338 is a deficient number, since it is larger than the sum of its proper divisors (516807194).

1028609338 is an equidigital number, since it uses as much as digits as its factorization.

1028609338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834176.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1028609338 is about 32071.9400411013. The cubic root of 1028609338 is about 1009.4469206620.

The spelling of 1028609338 in words is "one billion, twenty-eight million, six hundred nine thousand, three hundred thirty-eight".