1664350456 has 16 divisors (see below), whose sum is σ = 3304225440. Its totient is φ = 783223680.

The previous prime is 1664350447. The next prime is 1664350481. The reversal of 1664350456 is 6540534661.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6118800 + ... + 6119071.

It is an arithmetic number, because the mean of its divisors is an integer number (206514090).

Almost surely, 2^1664350456 is an apocalyptic number.

It is an amenable number.

1664350456 is a deficient number, since it is larger than the sum of its proper divisors (1639874984).

1664350456 is a wasteful number, since it uses less digits than its factorization.

1664350456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12237894 (or 12237890 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 1664350456 is about 40796.4515123558. The cubic root of 1664350456 is about 1185.0816125908.

The spelling of 1664350456 in words is "one billion, six hundred sixty-four million, three hundred fifty thousand, four hundred fifty-six".