1669338879 has 32 divisors (see below), whose sum is σ = 2591393280. Its totient is φ = 946899072.

The previous prime is 1669338877. The next prime is 1669338883. The reversal of 1669338879 is 9788339661.

It is not a de Polignac number, because 1669338879 - 2¹ = 1669338877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669338877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3027 + ... + 57860.

It is an arithmetic number, because the mean of its divisors is an integer number (80981040).

Almost surely, 2^1669338879 is an apocalyptic number.

1669338879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1669338879 is a deficient number, since it is larger than the sum of its proper divisors (922054401).

1669338879 is a wasteful number, since it uses less digits than its factorization.

1669338879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60959.

The product of its digits is 11757312, while the sum is 60.

The square root of 1669338879 is about 40857.5437220595. The cubic root of 1669338879 is about 1186.2644147581.

The spelling of 1669338879 in words is "one billion, six hundred sixty-nine million, three hundred thirty-eight thousand, eight hundred seventy-nine".