1064221238 has 16 divisors (see below), whose sum is σ = 1644740640. Its totient is φ = 516200256.

The previous prime is 1064221219. The next prime is 1064221259. The reversal of 1064221238 is 8321224601.

It is a happy number.

It is a super-2 number, since 2×1064221238² = 2265133686820505288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1064221238.

It is a congruent number.

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, 46970 + ... + 65837.

It is an arithmetic number, because the mean of its divisors is an integer number (102796290).

Almost surely, 2^1064221238 is an apocalyptic number.

1064221238 is a deficient number, since it is larger than the sum of its proper divisors (580519402).

1064221238 is a wasteful number, since it uses less digits than its factorization.

1064221238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112951.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1064221238 is about 32622.4039273626. The cubic root of 1064221238 is about 1020.9644977955.

Adding to 1064221238 its reverse (8321224601), we get a palindrome (9385445839).

The spelling of 1064221238 in words is "one billion, sixty-four million, two hundred twenty-one thousand, two hundred thirty-eight".