1909031332 has 12 divisors (see below), whose sum is σ = 3597789916. Its totient is φ = 881091360.

The previous prime is 1909031323. The next prime is 1909031339. The reversal of 1909031332 is 2331309091.

It can be written as a sum of positive squares in 2 ways, for example, as 961992256 + 947039076 = 31016^2 + 30774^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1909031294 and 1909031303.

It is not an unprimeable number, because it can be changed into a prime (1909031339) 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, 18356019 + ... + 18356122.

Almost surely, 2^1909031332 is an apocalyptic number.

It is an amenable number.

1909031332 is a deficient number, since it is larger than the sum of its proper divisors (1688758584).

1909031332 is a wasteful number, since it uses less digits than its factorization.

1909031332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36712158 (or 36712156 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 1909031332 is about 43692.4631029197. The cubic root of 1909031332 is about 1240.5216613624.

The spelling of 1909031332 in words is "one billion, nine hundred nine million, thirty-one thousand, three hundred thirty-two".