1664174093 has 2 divisors, whose sum is σ = 1664174094. Its totient is φ = 1664174092.

The previous prime is 1664174087. The next prime is 1664174101. The reversal of 1664174093 is 3904714661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592568649 + 71605444 = 39907^2 + 8462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1664174093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1664174093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1664174063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832087046 + 832087047.

It is an arithmetic number, because the mean of its divisors is an integer number (832087047).

Almost surely, 2^1664174093 is an apocalyptic number.

It is an amenable number.

1664174093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664174093 is an equidigital number, since it uses as much as digits as its factorization.

1664174093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1664174093 is about 40794.2899558259. The cubic root of 1664174093 is about 1185.0397520298.

The spelling of 1664174093 in words is "one billion, six hundred sixty-four million, one hundred seventy-four thousand, ninety-three".