1664810342 has 8 divisors (see below), whose sum is σ = 2689309056. Its totient is φ = 768373992.

The previous prime is 1664810309. The next prime is 1664810347. The reversal of 1664810342 is 2430184661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664810347) by changing a digit.

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, 32015558 + ... + 32015609.

It is an arithmetic number, because the mean of its divisors is an integer number (336163632).

Almost surely, 2^1664810342 is an apocalyptic number.

1664810342 is a deficient number, since it is larger than the sum of its proper divisors (1024498714).

1664810342 is a wasteful number, since it uses less digits than its factorization.

1664810342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64031182.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1664810342 is about 40802.0874711086. The cubic root of 1664810342 is about 1185.1907547190.

The spelling of 1664810342 in words is "one billion, six hundred sixty-four million, eight hundred ten thousand, three hundred forty-two".