1999148 has 6 divisors (see below), whose sum is σ = 3498516. Its totient is φ = 999572.

The previous prime is 1999121. The next prime is 1999163. The reversal of 1999148 is 8419991.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249890 + ... + 249897.

It is an arithmetic number, because the mean of its divisors is an integer number (583086).

2^1999148 is an apocalyptic number.

It is an amenable number.

1999148 is a deficient number, since it is larger than the sum of its proper divisors (1499368).

1999148 is a wasteful number, since it uses less digits than its factorization.

1999148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499791 (or 499789 counting only the distinct ones).

The product of its digits is 23328, while the sum is 41.

The square root of 1999148 is about 1413.9123027967. The cubic root of 1999148 is about 125.9742115695.

The spelling of 1999148 in words is "one million, nine hundred ninety-nine thousand, one hundred forty-eight".