1154230218 has 36 divisors (see below), whose sum is σ = 2588808690. Its totient is φ = 371226576.

The previous prime is 1154230213. The next prime is 1154230279. The reversal of 1154230218 is 8120324511.

It can be written as a sum of positive squares in only one way, i.e., 975125529 + 179104689 = 31227^2 + 13383^2 .

It is a super-2 number, since 2×1154230218² = 2664494792288655048, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1154230191 and 1154230200.

It is not an unprimeable number, because it can be changed into a prime (1154230213) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 775471 + ... + 776957.

Almost surely, 2^1154230218 is an apocalyptic number.

1154230218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1154230218 is an abundant number, since it is smaller than the sum of its proper divisors (1434578472).

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

1154230218 is an equidigital number, since it uses as much as digits as its factorization.

1154230218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 1521 counting only the distinct ones).

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

The square root of 1154230218 is about 33973.9638252589. The cubic root of 1154230218 is about 1048.9726059374.

Adding to 1154230218 its reverse (8120324511), we get a palindrome (9274554729).

The spelling of 1154230218 in words is "one billion, one hundred fifty-four million, two hundred thirty thousand, two hundred eighteen".