1020338664 has 32 divisors (see below), whose sum is σ = 2565108000. Its totient is φ = 338211392.

The previous prime is 1020338659. The next prime is 1020338687. The reversal of 1020338664 is 4668330201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114459 + ... + 123050.

It is an arithmetic number, because the mean of its divisors is an integer number (80159625).

Almost surely, 2^1020338664 is an apocalyptic number.

It is an amenable number.

1020338664 is an abundant number, since it is smaller than the sum of its proper divisors (1544769336).

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

1020338664 is a wasteful number, since it uses less digits than its factorization.

1020338664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237697 (or 237693 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1020338664 is about 31942.7403959022. The cubic root of 1020338664 is about 1006.7341047074.

Adding to 1020338664 its reverse (4668330201), we get a palindrome (5688668865).

The spelling of 1020338664 in words is "one billion, twenty million, three hundred thirty-eight thousand, six hundred sixty-four".