1640522111 has 16 divisors (see below), whose sum is σ = 1776445440. Its totient is φ = 1509943680.

The previous prime is 1640522099. The next prime is 1640522113. The reversal of 1640522111 is 1112250461.

It is not a de Polignac number, because 1640522111 - 2¹⁰ = 1640521087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640522113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150791 + ... + 161303.

It is an arithmetic number, because the mean of its divisors is an integer number (111027840).

Almost surely, 2^1640522111 is an apocalyptic number.

1640522111 is a deficient number, since it is larger than the sum of its proper divisors (135923329).

1640522111 is a wasteful number, since it uses less digits than its factorization.

1640522111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1640522111 is about 40503.3592557457. The cubic root of 1640522111 is about 1179.3988393858.

Adding to 1640522111 its reverse (1112250461), we get a palindrome (2752772572).

The spelling of 1640522111 in words is "one billion, six hundred forty million, five hundred twenty-two thousand, one hundred eleven".