1064606638 has 16 divisors (see below), whose sum is σ = 1626483600. Its totient is φ = 522527616.

The previous prime is 1064606633. The next prime is 1064606693. The reversal of 1064606638 is 8366064601.

It is a super-2 number, since 2×1064606638² = 2266774587347326088, 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 1064606638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064606633) 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, 5638 + ... + 46486.

It is an arithmetic number, because the mean of its divisors is an integer number (101655225).

Almost surely, 2^1064606638 is an apocalyptic number.

1064606638 is a deficient number, since it is larger than the sum of its proper divisors (561876962).

1064606638 is a wasteful number, since it uses less digits than its factorization.

1064606638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41091.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1064606638 is about 32628.3103761136. The cubic root of 1064606638 is about 1021.0877278829.

The spelling of 1064606638 in words is "one billion, sixty-four million, six hundred six thousand, six hundred thirty-eight".