1669920514 has 8 divisors (see below), whose sum is σ = 2591256060. Its totient is φ = 806168496.

The previous prime is 1669920503. The next prime is 1669920521. The reversal of 1669920514 is 4150299661.

It can be written as a sum of positive squares in 2 ways, for example, as 1622075625 + 47844889 = 40275^2 + 6917^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14395809 + ... + 14395924.

Almost surely, 2^1669920514 is an apocalyptic number.

1669920514 is a deficient number, since it is larger than the sum of its proper divisors (921335546).

1669920514 is a wasteful number, since it uses less digits than its factorization.

1669920514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28791764.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1669920514 is about 40864.6609431670. The cubic root of 1669920514 is about 1186.4021724443.

The spelling of 1669920514 in words is "one billion, six hundred sixty-nine million, nine hundred twenty thousand, five hundred fourteen".