1218844342 has 8 divisors (see below), whose sum is σ = 1935811656. Its totient is φ = 573573792.

The previous prime is 1218844337. The next prime is 1218844349. The reversal of 1218844342 is 2434488121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218844349) 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, 17924148 + ... + 17924215.

It is an arithmetic number, because the mean of its divisors is an integer number (241976457).

Almost surely, 2^1218844342 is an apocalyptic number.

1218844342 is a deficient number, since it is larger than the sum of its proper divisors (716967314).

1218844342 is a wasteful number, since it uses less digits than its factorization.

1218844342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35848382.

The product of its digits is 49152, while the sum is 37.

The square root of 1218844342 is about 34911.9512774637. The cubic root of 1218844342 is about 1068.1922315024.

The spelling of 1218844342 in words is "one billion, two hundred eighteen million, eight hundred forty-four thousand, three hundred forty-two".