1218245903 has 16 divisors (see below), whose sum is σ = 1421452800. Its totient is φ = 1022532000.

The previous prime is 1218245893. The next prime is 1218245911. The reversal of 1218245903 is 3095428121.

It is not a de Polignac number, because 1218245903 - 2⁶ = 1218245839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218245923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65828 + ... + 82278.

It is an arithmetic number, because the mean of its divisors is an integer number (88840800).

Almost surely, 2^1218245903 is an apocalyptic number.

1218245903 is a deficient number, since it is larger than the sum of its proper divisors (203206897).

1218245903 is a wasteful number, since it uses less digits than its factorization.

1218245903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16678.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1218245903 is about 34903.3795355120. The cubic root of 1218245903 is about 1068.0173793854.

It can be divided in two parts, 12182 and 45903, that added together give a palindrome (58085).

The spelling of 1218245903 in words is "one billion, two hundred eighteen million, two hundred forty-five thousand, nine hundred three".