1154320418 has 4 divisors (see below), whose sum is σ = 1731480630. Its totient is φ = 577160208.

The previous prime is 1154320373. The next prime is 1154320499. The reversal of 1154320418 is 8140234511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8140234511 = 3331 ⋅2443781.

It can be written as a sum of positive squares in only one way, i.e., 598634089 + 555686329 = 24467^2 + 23573^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 288580103 + ... + 288580106.

Almost surely, 2^1154320418 is an apocalyptic number.

1154320418 is a deficient number, since it is larger than the sum of its proper divisors (577160212).

1154320418 is an equidigital number, since it uses as much as digits as its factorization.

1154320418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577160211.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1154320418 is about 33975.2912864629. The cubic root of 1154320418 is about 1048.9999300255. Note that the first 4 decimals are identical.

Adding to 1154320418 its reverse (8140234511), we get a palindrome (9294554929).

The spelling of 1154320418 in words is "one billion, one hundred fifty-four million, three hundred twenty thousand, four hundred eighteen".