1218057734 has 8 divisors (see below), whose sum is σ = 1865960928. Its totient is φ = 596070760.

The previous prime is 1218057733. The next prime is 1218057749. The reversal of 1218057734 is 4377508121.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218057733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6478937 + ... + 6479124.

It is an arithmetic number, because the mean of its divisors is an integer number (233245116).

Almost surely, 2^1218057734 is an apocalyptic number.

1218057734 is a deficient number, since it is larger than the sum of its proper divisors (647903194).

1218057734 is a wasteful number, since it uses less digits than its factorization.

1218057734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12958110.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1218057734 is about 34900.6838614947. The cubic root of 1218057734 is about 1067.9623882680.

The spelling of 1218057734 in words is "one billion, two hundred eighteen million, fifty-seven thousand, seven hundred thirty-four".