1669052386 has 4 divisors (see below), whose sum is σ = 2503578582. Its totient is φ = 834526192.

The previous prime is 1669052383. The next prime is 1669052387. The reversal of 1669052386 is 6832509661.

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

It can be written as a sum of positive squares in only one way, i.e., 1284147225 + 384905161 = 35835^2 + 19619^2 .

It is not an unprimeable number, because it can be changed into a prime (1669052383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417263095 + ... + 417263098.

Almost surely, 2^1669052386 is an apocalyptic number.

1669052386 is a deficient number, since it is larger than the sum of its proper divisors (834526196).

1669052386 is an equidigital number, since it uses as much as digits as its factorization.

1669052386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834526195.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1669052386 is about 40854.0375728030. The cubic root of 1669052386 is about 1186.1965483911.

The spelling of 1669052386 in words is "one billion, six hundred sixty-nine million, fifty-two thousand, three hundred eighty-six".