1640106104 has 64 divisors (see below), whose sum is σ = 3887217600. Its totient is φ = 631286784.

The previous prime is 1640106101. The next prime is 1640106133. The reversal of 1640106104 is 4016010461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640106104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640106101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3509 + ... + 57380.

It is an arithmetic number, because the mean of its divisors is an integer number (60737775).

Almost surely, 2^1640106104 is an apocalyptic number.

1640106104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1640106104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943608800).

1640106104 is an abundant number, since it is smaller than the sum of its proper divisors (2247111496).

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

1640106104 is a wasteful number, since it uses less digits than its factorization.

1640106104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60952 (or 60948 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1640106104 is about 40498.2234672090. The cubic root of 1640106104 is about 1179.2991394898.

Adding to 1640106104 its reverse (4016010461), we get a palindrome (5656116565).

The spelling of 1640106104 in words is "one billion, six hundred forty million, one hundred six thousand, one hundred four".