1640522106 has 16 divisors (see below), whose sum is σ = 3645604800. Its totient is φ = 546840684.

The previous prime is 1640522099. The next prime is 1640522113. The reversal of 1640522106 is 6012250461.

1640522106 is a `hidden beast` number, since 1 + 640 + 5 + 2 + 2 + 10 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1640522099) and next prime (1640522113).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1640522106.

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, 15189966 + ... + 15190073.

It is an arithmetic number, because the mean of its divisors is an integer number (227850300).

Almost surely, 2^1640522106 is an apocalyptic number.

1640522106 is an abundant number, since it is smaller than the sum of its proper divisors (2005082694).

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

1640522106 is a wasteful number, since it uses less digits than its factorization.

1640522106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30380050 (or 30380044 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1640522106 is about 40503.3591940224. The cubic root of 1640522106 is about 1179.3988381876.

Adding to 1640522106 its reverse (6012250461), we get a palindrome (7652772567).

The spelling of 1640522106 in words is "one billion, six hundred forty million, five hundred twenty-two thousand, one hundred six".