1669474623 has 4 divisors (see below), whose sum is σ = 2225966168. Its totient is φ = 1112983080.

The previous prime is 1669474603. The next prime is 1669474627. The reversal of 1669474623 is 3264749661.

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

It is not a de Polignac number, because 1669474623 - 2⁹ = 1669474111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669474627) 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, 278245768 + ... + 278245773.

It is an arithmetic number, because the mean of its divisors is an integer number (556491542).

Almost surely, 2^1669474623 is an apocalyptic number.

1669474623 is a deficient number, since it is larger than the sum of its proper divisors (556491545).

1669474623 is an equidigital number, since it uses as much as digits as its factorization.

1669474623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556491544.

The product of its digits is 1306368, while the sum is 48.

The square root of 1669474623 is about 40859.2048747892. The cubic root of 1669474623 is about 1186.2965679884.

The spelling of 1669474623 in words is "one billion, six hundred sixty-nine million, four hundred seventy-four thousand, six hundred twenty-three".