1285342018 has 8 divisors (see below), whose sum is σ = 2041425612. Its totient is φ = 604866816.

The previous prime is 1285342013. The next prime is 1285342033. The reversal of 1285342018 is 8102435821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1214731609 + 70610409 = 34853^2 + 8403^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 37804177 = 1285342018 / (1 + 2 + 8 + 5 + 3 + 4 + 2 + 0 + 1 + 8).

It is not an unprimeable number, because it can be changed into a prime (1285342013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18902055 + ... + 18902122.

Almost surely, 2^1285342018 is an apocalyptic number.

1285342018 is a deficient number, since it is larger than the sum of its proper divisors (756083594).

1285342018 is a wasteful number, since it uses less digits than its factorization.

1285342018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37804196.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1285342018 is about 35851.6668789612. Note that the first 3 decimals coincide. The cubic root of 1285342018 is about 1087.2754156042.

Adding to 1285342018 its reverse (8102435821), we get a palindrome (9387777839).

The spelling of 1285342018 in words is "one billion, two hundred eighty-five million, three hundred forty-two thousand, eighteen".