1664353164 has 24 divisors (see below), whose sum is σ = 3941455168. Its totient is φ = 546503760.

The previous prime is 1664353153. The next prime is 1664353169. The reversal of 1664353164 is 4613534661.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1664353169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034242 + ... + 1035849.

Almost surely, 2^1664353164 is an apocalyptic number.

It is an amenable number.

1664353164 is an abundant number, since it is smaller than the sum of its proper divisors (2277102004).

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

1664353164 is a wasteful number, since it uses less digits than its factorization.

1664353164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070165 (or 2070163 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 1664353164 is about 40796.4847015034. The cubic root of 1664353164 is about 1185.0822553239.

The spelling of 1664353164 in words is "one billion, six hundred sixty-four million, three hundred fifty-three thousand, one hundred sixty-four".