1917414109 has 4 divisors (see below), whose sum is σ = 2064907516. Its totient is φ = 1769920704.

The previous prime is 1917414097. The next prime is 1917414133. The reversal of 1917414109 is 9014147191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1263589209 + 653824900 = 35547^2 + 25570^2 .

It is a cyclic number.

It is not a de Polignac number, because 1917414109 - 2²⁷ = 1783196381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1917414179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73746684 + ... + 73746709.

It is an arithmetic number, because the mean of its divisors is an integer number (516226879).

Almost surely, 2^1917414109 is an apocalyptic number.

It is an amenable number.

1917414109 is a deficient number, since it is larger than the sum of its proper divisors (147493407).

1917414109 is a wasteful number, since it uses less digits than its factorization.

1917414109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147493406.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 1917414109 is about 43788.2873494728. The cubic root of 1917414109 is about 1242.3347680423.

The spelling of 1917414109 in words is "one billion, nine hundred seventeen million, four hundred fourteen thousand, one hundred nine".