1909910916 has 36 divisors (see below), whose sum is σ = 4845036924. Its totient is φ = 634368000.

The previous prime is 1909910903. The next prime is 1909910927. The reversal of 1909910916 is 6190199091.

It can be written as a sum of positive squares in 2 ways, for example, as 1432925316 + 476985600 = 37854^2 + 21840^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84285 + ... + 104516.

It is an arithmetic number, because the mean of its divisors is an integer number (134584359).

Almost surely, 2^1909910916 is an apocalyptic number.

It is an amenable number.

1909910916 is an abundant number, since it is smaller than the sum of its proper divisors (2935126008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1909910916 is a wasteful number, since it uses less digits than its factorization.

1909910916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189092 (or 189087 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 45.

The square root of 1909910916 is about 43702.5275699244. The cubic root of 1909910916 is about 1240.7121550870.

The spelling of 1909910916 in words is "one billion, nine hundred nine million, nine hundred ten thousand, nine hundred sixteen".