1669840148 has 24 divisors (see below), whose sum is σ = 2970590112. Its totient is φ = 821189984.

The previous prime is 1669840121. The next prime is 1669840163. The reversal of 1669840148 is 8410489661.

It is a super-2 number, since 2×1669840148² = 5576732239745323808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64286 + ... + 86442.

It is an arithmetic number, because the mean of its divisors is an integer number (123774588).

Almost surely, 2^1669840148 is an apocalyptic number.

It is an amenable number.

1669840148 is a deficient number, since it is larger than the sum of its proper divisors (1300749964).

1669840148 is a wasteful number, since it uses less digits than its factorization.

1669840148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22471 (or 22469 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 1669840148 is about 40863.6776122757. The cubic root of 1669840148 is about 1186.3831400162.

The spelling of 1669840148 in words is "one billion, six hundred sixty-nine million, eight hundred forty thousand, one hundred forty-eight".