1218152430 has 96 divisors (see below), whose sum is σ = 3486019680. Its totient is φ = 292669440.

The previous prime is 1218152423. The next prime is 1218152449. The reversal of 1218152430 is 342518121.

1218152430 is a `hidden beast` number, since 1 + 2 + 181 + 52 + 430 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1218152394 and 1218152403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106426 + ... + 117314.

It is an arithmetic number, because the mean of its divisors is an integer number (36312705).

Almost surely, 2^1218152430 is an apocalyptic number.

1218152430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218152430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743009840).

1218152430 is an abundant number, since it is smaller than the sum of its proper divisors (2267867250).

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

1218152430 is a wasteful number, since it uses less digits than its factorization.

1218152430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11026 (or 11023 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1218152430 is about 34902.0404847625. The cubic root of 1218152430 is about 1067.9900632413.

The spelling of 1218152430 in words is "one billion, two hundred eighteen million, one hundred fifty-two thousand, four hundred thirty".