1664876330 has 64 divisors (see below), whose sum is σ = 3415910400. Its totient is φ = 579156480.

The previous prime is 1664876287. The next prime is 1664876363. The reversal of 1664876330 is 336784661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470006 + ... + 473534.

It is an arithmetic number, because the mean of its divisors is an integer number (53373600).

Almost surely, 2^1664876330 is an apocalyptic number.

1664876330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664876330 is an abundant number, since it is smaller than the sum of its proper divisors (1751034070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1664876330 is a wasteful number, since it uses less digits than its factorization.

1664876330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 1664876330 is about 40802.8960981938. The cubic root of 1664876330 is about 1185.2064136267.

The spelling of 1664876330 in words is "one billion, six hundred sixty-four million, eight hundred seventy-six thousand, three hundred thirty".