1218785088 has 224 divisors, whose sum is σ = 3604930560. Its totient is φ = 361912320.

The previous prime is 1218785083. The next prime is 1218785107. The reversal of 1218785088 is 8805878121.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218785081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3969831 + ... + 3970137.

It is an arithmetic number, because the mean of its divisors is an integer number (16093440).

Almost surely, 2^1218785088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218785088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802465280).

1218785088 is an abundant number, since it is smaller than the sum of its proper divisors (2386145472).

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

1218785088 is a wasteful number, since it uses less digits than its factorization.

1218785088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 48.

The square root of 1218785088 is about 34911.1026465794. The cubic root of 1218785088 is about 1068.1749212012.

The spelling of 1218785088 in words is "one billion, two hundred eighteen million, seven hundred eighty-five thousand, eighty-eight".