1669141065 has 8 divisors (see below), whose sum is σ = 2670625728. Its totient is φ = 890208560.

The previous prime is 1669141063. The next prime is 1669141069. The reversal of 1669141065 is 5601419661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1669141065 - 2¹ = 1669141063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1669141063) 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, 55638021 + ... + 55638050.

It is an arithmetic number, because the mean of its divisors is an integer number (333828216).

Almost surely, 2^1669141065 is an apocalyptic number.

1669141065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1669141065 is a deficient number, since it is larger than the sum of its proper divisors (1001484663).

1669141065 is a wasteful number, since it uses less digits than its factorization.

1669141065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111276079.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1669141065 is about 40855.1228733925. The cubic root of 1669141065 is about 1186.2175560922.

The spelling of 1669141065 in words is "one billion, six hundred sixty-nine million, one hundred forty-one thousand, sixty-five".