1916648213 has 8 divisors (see below), whose sum is σ = 2000764800. Its totient is φ = 1832597008.

The previous prime is 1916648207. The next prime is 1916648219. The reversal of 1916648213 is 3128466191.

It is an interprime number because it is at equal distance from previous prime (1916648207) and next prime (1916648219).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1916648213 - 2¹⁰ = 1916647189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916648219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49208 + ... + 79086.

It is an arithmetic number, because the mean of its divisors is an integer number (250095600).

Almost surely, 2^1916648213 is an apocalyptic number.

It is an amenable number.

1916648213 is a deficient number, since it is larger than the sum of its proper divisors (84116587).

1916648213 is a wasteful number, since it uses less digits than its factorization.

1916648213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32691.

The product of its digits is 62208, while the sum is 41.

The square root of 1916648213 is about 43779.5410323133. The cubic root of 1916648213 is about 1242.1693323924.

The spelling of 1916648213 in words is "one billion, nine hundred sixteen million, six hundred forty-eight thousand, two hundred thirteen".