1909370113 has 36 divisors (see below), whose sum is σ = 2383013820. Its totient is φ = 1524966912.

The previous prime is 1909370081. The next prime is 1909370117. The reversal of 1909370113 is 3110739091.

It can be written as a sum of positive squares in 6 ways, for example, as 488984769 + 1420385344 = 22113^2 + 37688^2 .

It is not a de Polignac number, because 1909370113 - 2⁵ = 1909370081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1909370117) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1542931 + ... + 1544167.

Almost surely, 2^1909370113 is an apocalyptic number.

It is an amenable number.

1909370113 is a deficient number, since it is larger than the sum of its proper divisors (473643707).

1909370113 is a wasteful number, since it uses less digits than its factorization.

1909370113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 1909370113 is about 43696.3398123916. The cubic root of 1909370113 is about 1240.5950389447.

The spelling of 1909370113 in words is "one billion, nine hundred nine million, three hundred seventy thousand, one hundred thirteen".