1909914245 has 16 divisors (see below), whose sum is σ = 2323581120. Its totient is φ = 1506873984.

The previous prime is 1909914217. The next prime is 1909914287. The reversal of 1909914245 is 5424199091.

It is a cyclic number.

It is not a de Polignac number, because 1909914245 - 2²⁰ = 1908865669 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1909914196 and 1909914205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252326 + ... + 259784.

It is an arithmetic number, because the mean of its divisors is an integer number (145223820).

Almost surely, 2^1909914245 is an apocalyptic number.

It is an amenable number.

1909914245 is a deficient number, since it is larger than the sum of its proper divisors (413666875).

1909914245 is an equidigital number, since it uses as much as digits as its factorization.

1909914245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1909914245 is about 43702.5656569497. The cubic root of 1909914245 is about 1240.7128759459.

The spelling of 1909914245 in words is "one billion, nine hundred nine million, nine hundred fourteen thousand, two hundred forty-five".