1640534022 has 48 divisors (see below), whose sum is σ = 3642210000. Its totient is φ = 533385216.

The previous prime is 1640534003. The next prime is 1640534047. The reversal of 1640534022 is 2204350461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 965878 + ... + 967574.

It is an arithmetic number, because the mean of its divisors is an integer number (75879375).

Almost surely, 2^1640534022 is an apocalyptic number.

1640534022 is an abundant number, since it is smaller than the sum of its proper divisors (2001675978).

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

1640534022 is a wasteful number, since it uses less digits than its factorization.

1640534022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1640534022 is about 40503.5062926656. The cubic root of 1640534022 is about 1179.4016937180.

Adding to 1640534022 its reverse (2204350461), we get a palindrome (3844884483).

The spelling of 1640534022 in words is "one billion, six hundred forty million, five hundred thirty-four thousand, twenty-two".