1218454008 has 32 divisors (see below), whose sum is σ = 3144399360. Its totient is φ = 393049440.

The previous prime is 1218454007. The next prime is 1218454009. The reversal of 1218454008 is 8004548121.

It is an interprime number because it is at equal distance from previous prime (1218454007) and next prime (1218454009).

It is a super-2 number, since 2×1218454008² = 2969260339222528128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1218454008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218454007) 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 7 ways as a sum of consecutive naturals, for example, 818110 + ... + 819597.

It is an arithmetic number, because the mean of its divisors is an integer number (98262480).

Almost surely, 2^1218454008 is an apocalyptic number.

It is an amenable number.

1218454008 is an abundant number, since it is smaller than the sum of its proper divisors (1925945352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218454008 is a wasteful number, since it uses less digits than its factorization.

1218454008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637747 (or 1637743 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 1218454008 is about 34906.3605665214. The cubic root of 1218454008 is about 1068.0781900700.

The spelling of 1218454008 in words is "one billion, two hundred eighteen million, four hundred fifty-four thousand, eight".