1949389256 has 16 divisors (see below), whose sum is σ = 3658435200. Its totient is φ = 973806544.

The previous prime is 1949389207. The next prime is 1949389259. The reversal of 1949389256 is 6529839491.

It is not an unprimeable number, because it can be changed into a prime (1949389259) by changing a digit.

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, 101636 + ... + 119283.

It is an arithmetic number, because the mean of its divisors is an integer number (228652200).

Almost surely, 2^1949389256 is an apocalyptic number.

It is an amenable number.

1949389256 is a deficient number, since it is larger than the sum of its proper divisors (1709045944).

1949389256 is a wasteful number, since it uses less digits than its factorization.

1949389256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222028 (or 222024 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 56.

The square root of 1949389256 is about 44151.8884760324. Note that the first 3 decimals coincide. The cubic root of 1949389256 is about 1249.2025326248.

The spelling of 1949389256 in words is "one billion, nine hundred forty-nine million, three hundred eighty-nine thousand, two hundred fifty-six".