1949866916 has 12 divisors (see below), whose sum is σ = 3412752588. Its totient is φ = 974794752.

The previous prime is 1949866907. The next prime is 1949866927. The reversal of 1949866916 is 6196689491.

It can be written as a sum of positive squares in 2 ways, for example, as 1448106916 + 501760000 = 38054^2 + 22400^2 .

It is a super-2 number, since 2×1949866916² = 7603961980222702112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040 + ... + 62456.

It is an arithmetic number, because the mean of its divisors is an integer number (284396049).

Almost surely, 2^1949866916 is an apocalyptic number.

It is an amenable number.

1949866916 is a deficient number, since it is larger than the sum of its proper divisors (1462885672).

1949866916 is a wasteful number, since it uses less digits than its factorization.

1949866916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69358 (or 69356 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 59.

The square root of 1949866916 is about 44157.2974263598. The cubic root of 1949866916 is about 1249.3045552370.

The spelling of 1949866916 in words is "one billion, nine hundred forty-nine million, eight hundred sixty-six thousand, nine hundred sixteen".