1949405896 has 32 divisors (see below), whose sum is σ = 3739680000. Its totient is φ = 952413696.

The previous prime is 1949405881. The next prime is 1949405921. The reversal of 1949405896 is 6985049491.

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 7 ways as a sum of consecutive naturals, for example, 45405 + ... + 77203.

It is an arithmetic number, because the mean of its divisors is an integer number (116865000).

Almost surely, 2^1949405896 is an apocalyptic number.

It is an amenable number.

1949405896 is a deficient number, since it is larger than the sum of its proper divisors (1790274104).

1949405896 is a wasteful number, since it uses less digits than its factorization.

1949405896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31981 (or 31977 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 1949405896 is about 44152.0769160410. The cubic root of 1949405896 is about 1249.2060870152.

The spelling of 1949405896 in words is "one billion, nine hundred forty-nine million, four hundred five thousand, eight hundred ninety-six".