1664060418 has 12 divisors (see below), whose sum is σ = 3605464278. Its totient is φ = 554686800.

The previous prime is 1664060407. The next prime is 1664060423. The reversal of 1664060418 is 8140604661.

1664060418 is a `hidden beast` number, since 1 + 6 + 6 + 40 + 604 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1652178609 + 11881809 = 40647^2 + 3447^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46223883 + ... + 46223918.

Almost surely, 2^1664060418 is an apocalyptic number.

1664060418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1664060418 is an abundant number, since it is smaller than the sum of its proper divisors (1941403860).

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

1664060418 is a wasteful number, since it uses less digits than its factorization.

1664060418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92447809 (or 92447806 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1664060418 is about 40792.8966610610. The cubic root of 1664060418 is about 1185.0127691836.

The spelling of 1664060418 in words is "one billion, six hundred sixty-four million, sixty thousand, four hundred eighteen".