1218497703 has 16 divisors (see below), whose sum is σ = 1711155456. Its totient is φ = 769746560.

The previous prime is 1218497663. The next prime is 1218497723. The reversal of 1218497703 is 3077948121.

It is a cyclic number.

It is not a de Polignac number, because 1218497703 - 2¹² = 1218493607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218497723) 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 15 ways as a sum of consecutive naturals, for example, 75138 + ... + 89903.

It is an arithmetic number, because the mean of its divisors is an integer number (106947216).

Almost surely, 2^1218497703 is an apocalyptic number.

1218497703 is a deficient number, since it is larger than the sum of its proper divisors (492657753).

1218497703 is a wasteful number, since it uses less digits than its factorization.

1218497703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165174.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1218497703 is about 34906.9864497066. The cubic root of 1218497703 is about 1068.0909573741.

The spelling of 1218497703 in words is "one billion, two hundred eighteen million, four hundred ninety-seven thousand, seven hundred three".