1218348743 has 8 divisors (see below), whose sum is σ = 1250194176. Its totient is φ = 1186604800.

The previous prime is 1218348739. The next prime is 1218348773. The reversal of 1218348743 is 3478438121.

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 1218348743 - 2² = 1218348739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1218348743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218348773) 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, 743 + ... + 49368.

It is an arithmetic number, because the mean of its divisors is an integer number (156274272).

Almost surely, 2^1218348743 is an apocalyptic number.

1218348743 is a deficient number, since it is larger than the sum of its proper divisors (31845433).

1218348743 is an equidigital number, since it uses as much as digits as its factorization.

1218348743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50745.

The product of its digits is 129024, while the sum is 41.

The square root of 1218348743 is about 34904.8527142001. The cubic root of 1218348743 is about 1068.0474312867.

The spelling of 1218348743 in words is "one billion, two hundred eighteen million, three hundred forty-eight thousand, seven hundred forty-three".