1664224101 has 6 divisors (see below), whose sum is σ = 2403879270. Its totient is φ = 1109482728.

The previous prime is 1664224097. The next prime is 1664224103. The reversal of 1664224101 is 1014224661.

1664224101 is a `hidden beast` number, since 1 + 6 + 642 + 2 + 4 + 10 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1071252900 + 592971201 = 32730^2 + 24351^2 .

It is not a de Polignac number, because 1664224101 - 2² = 1664224097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664224103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92456886 + ... + 92456903.

It is an arithmetic number, because the mean of its divisors is an integer number (400646545).

Almost surely, 2^1664224101 is an apocalyptic number.

It is an amenable number.

1664224101 is a deficient number, since it is larger than the sum of its proper divisors (739655169).

1664224101 is a wasteful number, since it uses less digits than its factorization.

1664224101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184913795 (or 184913792 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1664224101 is about 40794.9028801393. The cubic root of 1664224101 is about 1185.0516219567.

Adding to 1664224101 its reverse (1014224661), we get a palindrome (2678448762).

The spelling of 1664224101 in words is "one billion, six hundred sixty-four million, two hundred twenty-four thousand, one hundred one".