1640106101 has 2 divisors, whose sum is σ = 1640106102. Its totient is φ = 1640106100.

The previous prime is 1640106073. The next prime is 1640106133. The reversal of 1640106101 is 1016010461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1521078001 + 119028100 = 39001^2 + 10910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1640106101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640106401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820053050 + 820053051.

It is an arithmetic number, because the mean of its divisors is an integer number (820053051).

Almost surely, 2^1640106101 is an apocalyptic number.

It is an amenable number.

1640106101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640106101 is an equidigital number, since it uses as much as digits as its factorization.

1640106101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1640106101 is about 40498.2234301704. The cubic root of 1640106101 is about 1179.2991387708.

Adding to 1640106101 its reverse (1016010461), we get a palindrome (2656116562).

The spelling of 1640106101 in words is "one billion, six hundred forty million, one hundred six thousand, one hundred one".