1909214513 has 4 divisors (see below), whose sum is σ = 1937710320. Its totient is φ = 1880718708.

The previous prime is 1909214509. The next prime is 1909214519. The reversal of 1909214513 is 3154129091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1909214513 - 2² = 1909214509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1909214519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14247803 + ... + 14247936.

It is an arithmetic number, because the mean of its divisors is an integer number (484427580).

Almost surely, 2^1909214513 is an apocalyptic number.

It is an amenable number.

1909214513 is a deficient number, since it is larger than the sum of its proper divisors (28495807).

1909214513 is an equidigital number, since it uses as much as digits as its factorization.

1909214513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28495806.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1909214513 is about 43694.5593066231. The cubic root of 1909214513 is about 1240.5613381567.

The spelling of 1909214513 in words is "one billion, nine hundred nine million, two hundred fourteen thousand, five hundred thirteen".