1899748 has 6 divisors (see below), whose sum is σ = 3324566. Its totient is φ = 949872.

The previous prime is 1899721. The next prime is 1899757. The reversal of 1899748 is 8479981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 381924 = 1232^2 + 618^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1899698 and 1899707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237465 + ... + 237472.

2^1899748 is an apocalyptic number.

It is an amenable number.

1899748 is a deficient number, since it is larger than the sum of its proper divisors (1424818).

1899748 is a wasteful number, since it uses less digits than its factorization.

1899748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474941 (or 474939 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 1899748 is about 1378.3134621703. The cubic root of 1899748 is about 123.8507569717.

Adding to 1899748 its product of digits (145152), we get a square (2044900 = 1430²).

The spelling of 1899748 in words is "one million, eight hundred ninety-nine thousand, seven hundred forty-eight".