1916337413 has 4 divisors (see below), whose sum is σ = 1917310668. Its totient is φ = 1915364160.

The previous prime is 1916337403. The next prime is 1916337419. The reversal of 1916337413 is 3147336191.

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 1305160129 + 611177284 = 36127^2 + 24722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916337413 - 2⁶ = 1916337349 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 (1916337419) 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, 483668 + ... + 487613.

It is an arithmetic number, because the mean of its divisors is an integer number (479327667).

Almost surely, 2^1916337413 is an apocalyptic number.

It is an amenable number.

1916337413 is a deficient number, since it is larger than the sum of its proper divisors (973255).

1916337413 is an equidigital number, since it uses as much as digits as its factorization.

1916337413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973254.

The product of its digits is 40824, while the sum is 38.

The square root of 1916337413 is about 43775.9912851782. The cubic root of 1916337413 is about 1242.1021861636.

The spelling of 1916337413 in words is "one billion, nine hundred sixteen million, three hundred thirty-seven thousand, four hundred thirteen".