1664228466 has 12 divisors (see below), whose sum is σ = 3605828382. Its totient is φ = 554742816.

The previous prime is 1664228453. The next prime is 1664228473. The reversal of 1664228466 is 6648224661.

1664228466 is a `hidden beast` number, since 166 + 4 + 2 + 28 + 466 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1090386441 + 573842025 = 33021^2 + 23955^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46228551 + ... + 46228586.

Almost surely, 2^1664228466 is an apocalyptic number.

1664228466 is an abundant number, since it is smaller than the sum of its proper divisors (1941599916).

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

1664228466 is a wasteful number, since it uses less digits than its factorization.

1664228466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92457145 (or 92457142 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 1664228466 is about 40794.9563794349. The cubic root of 1664228466 is about 1185.0526580243.

The spelling of 1664228466 in words is "one billion, six hundred sixty-four million, two hundred twenty-eight thousand, four hundred sixty-six".