1918286242 has 8 divisors (see below), whose sum is σ = 2909760300. Its totient is φ = 948366144.

The previous prime is 1918286221. The next prime is 1918286243. The reversal of 1918286242 is 2426828191.

It can be written as a sum of positive squares in 2 ways, for example, as 1848914001 + 69372241 = 42999^2 + 8329^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1918286243) 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, 5388267 + ... + 5388622.

Almost surely, 2^1918286242 is an apocalyptic number.

1918286242 is a deficient number, since it is larger than the sum of its proper divisors (991474058).

1918286242 is a wasteful number, since it uses less digits than its factorization.

1918286242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776980.

The product of its digits is 110592, while the sum is 43.

The square root of 1918286242 is about 43798.2447365188. The cubic root of 1918286242 is about 1242.5230975414.

The spelling of 1918286242 in words is "one billion, nine hundred eighteen million, two hundred eighty-six thousand, two hundred forty-two".