1664409532 has 12 divisors (see below), whose sum is σ = 2913006096. Its totient is φ = 832122080.

The previous prime is 1664409521. The next prime is 1664409581. The reversal of 1664409532 is 2359044661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57273 + ... + 81295.

It is an arithmetic number, because the mean of its divisors is an integer number (242750508).

Almost surely, 2^1664409532 is an apocalyptic number.

It is an amenable number.

1664409532 is a deficient number, since it is larger than the sum of its proper divisors (1248596564).

1664409532 is a wasteful number, since it uses less digits than its factorization.

1664409532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41348 (or 41346 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 1664409532 is about 40797.1755394905. The cubic root of 1664409532 is about 1185.0956338872.

The spelling of 1664409532 in words is "one billion, six hundred sixty-four million, four hundred nine thousand, five hundred thirty-two".