1664360411 has 6 divisors (see below), whose sum is σ = 1936092780. Its totient is φ = 1426594596.

The previous prime is 1664360407. The next prime is 1664360413. The reversal of 1664360411 is 1140634661.

It is not a de Polignac number, because 1664360411 - 2² = 1664360407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664360413) 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, 16983221 + ... + 16983318.

It is an arithmetic number, because the mean of its divisors is an integer number (322682130).

Almost surely, 2^1664360411 is an apocalyptic number.

1664360411 is a deficient number, since it is larger than the sum of its proper divisors (271732369).

1664360411 is an equidigital number, since it uses as much as digits as its factorization.

1664360411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33966553 (or 33966546 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1664360411 is about 40796.5735203338. The cubic root of 1664360411 is about 1185.0839753672.

The spelling of 1664360411 in words is "one billion, six hundred sixty-four million, three hundred sixty thousand, four hundred eleven".