1669530490 has 8 divisors (see below), whose sum is σ = 3005154900. Its totient is φ = 667812192.

The previous prime is 1669530487. The next prime is 1669530503. The reversal of 1669530490 is 940359661.

It can be written as a sum of positive squares in 2 ways, for example, as 1573470889 + 96059601 = 39667^2 + 9801^2 .

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, 83476515 + ... + 83476534.

Almost surely, 2^1669530490 is an apocalyptic number.

1669530490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669530490 is a deficient number, since it is larger than the sum of its proper divisors (1335624410).

1669530490 is a wasteful number, since it uses less digits than its factorization.

1669530490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166953056.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 1669530490 is about 40859.8885216296. Note that the first 3 decimals coincide. The cubic root of 1669530490 is about 1186.3098005128.

The spelling of 1669530490 in words is "one billion, six hundred sixty-nine million, five hundred thirty thousand, four hundred ninety".