1949128 has 16 divisors (see below), whose sum is σ = 3724380. Its totient is φ = 955968.

The previous prime is 1949117. The next prime is 1949141. The reversal of 1949128 is 8219491.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 39204 = 1382^2 + 198^2 .

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1949093 and 1949102.

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 in 3 ways as a sum of consecutive naturals, for example, 1875 + ... + 2722.

2^1949128 is an apocalyptic number.

It is an amenable number.

1949128 is a deficient number, since it is larger than the sum of its proper divisors (1775252).

1949128 is a wasteful number, since it uses less digits than its factorization.

1949128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656 (or 4652 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 1949128 is about 1396.1117433787. Note that the first 3 decimals coincide. The cubic root of 1949128 is about 124.9146724336.

The spelling of 1949128 in words is "one million, nine hundred forty-nine thousand, one hundred twenty-eight".