1669980149 has 8 divisors (see below), whose sum is σ = 1674282240. Its totient is φ = 1665685296.

The previous prime is 1669980107. The next prime is 1669980197. The reversal of 1669980149 is 9410899661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1669980149 - 2¹² = 1669976053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1669980149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669980049) 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, 1172852 + ... + 1174274.

It is an arithmetic number, because the mean of its divisors is an integer number (209285280).

Almost surely, 2^1669980149 is an apocalyptic number.

It is an amenable number.

1669980149 is a deficient number, since it is larger than the sum of its proper divisors (4302091).

1669980149 is a wasteful number, since it uses less digits than its factorization.

1669980149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 1669980149 is about 40865.3906013389. The cubic root of 1669980149 is about 1186.4162949232.

The spelling of 1669980149 in words is "one billion, six hundred sixty-nine million, nine hundred eighty thousand, one hundred forty-nine".