1664501404 has 12 divisors (see below), whose sum is σ = 2914852024. Its totient is φ = 831686544.

The previous prime is 1664501401. The next prime is 1664501417. The reversal of 1664501404 is 4041054661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664501401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134367 + ... + 146230.

Almost surely, 2^1664501404 is an apocalyptic number.

It is an amenable number.

1664501404 is a deficient number, since it is larger than the sum of its proper divisors (1250350620).

1664501404 is a wasteful number, since it uses less digits than its factorization.

1664501404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282084 (or 282082 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1664501404 is about 40798.3014842530. The cubic root of 1664501404 is about 1185.1174384372.

The spelling of 1664501404 in words is "one billion, six hundred sixty-four million, five hundred one thousand, four hundred four".