1909291241 has 16 divisors (see below), whose sum is σ = 2320436160. Its totient is φ = 1546950720.

The previous prime is 1909291217. The next prime is 1909291243. The reversal of 1909291241 is 1421929091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1909291241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1909291195 and 1909291204.

It is not an unprimeable number, because it can be changed into a prime (1909291243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226055 + ... + 234348.

It is an arithmetic number, because the mean of its divisors is an integer number (145027260).

Almost surely, 2^1909291241 is an apocalyptic number.

1909291241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1909291241 is a deficient number, since it is larger than the sum of its proper divisors (411144919).

1909291241 is a wasteful number, since it uses less digits than its factorization.

1909291241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460456.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1909291241 is about 43695.4373018511. The cubic root of 1909291241 is about 1240.5779565993.

The spelling of 1909291241 in words is "one billion, nine hundred nine million, two hundred ninety-one thousand, two hundred forty-one".