1669163455 has 4 divisors (see below), whose sum is σ = 2002996152. Its totient is φ = 1335330760.

The previous prime is 1669163453. The next prime is 1669163459. The reversal of 1669163455 is 5543619661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1669163455 - 2¹ = 1669163453 is a prime.

It is a super-2 number, since 2×1669163455² = 5572213279015074050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669163453) 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, 166916341 + ... + 166916350.

It is an arithmetic number, because the mean of its divisors is an integer number (500749038).

Almost surely, 2^1669163455 is an apocalyptic number.

1669163455 is a deficient number, since it is larger than the sum of its proper divisors (333832697).

1669163455 is an equidigital number, since it uses as much as digits as its factorization.

1669163455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333832696.

The product of its digits is 583200, while the sum is 46.

The square root of 1669163455 is about 40855.3968895175. The cubic root of 1669163455 is about 1186.2228600762. Note that the first 3 decimals are identical.

The spelling of 1669163455 in words is "one billion, six hundred sixty-nine million, one hundred sixty-three thousand, four hundred fifty-five".