918969819 has 8 divisors (see below), whose sum is σ = 1245380112. Its totient is φ = 602603040.

The previous prime is 918969787. The next prime is 918969823.

It is a happy number.

918969819 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 918969819 - 2⁵ = 918969787 is a prime.

It is a super-2 number, since 2×918969819² = 1689011056465785522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (918969829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2510664 + ... + 2511029.

It is an arithmetic number, because the mean of its divisors is an integer number (155672514).

Almost surely, 2^918969819 is an apocalyptic number.

918969819 is a deficient number, since it is larger than the sum of its proper divisors (326410293).

918969819 is a wasteful number, since it uses less digits than its factorization.

918969819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021757.

The product of its digits is 2519424, while the sum is 60.

The square root of 918969819 is about 30314.5149886981. The cubic root of 918969819 is about 972.2256679792.

The spelling of 918969819 in words is "nine hundred eighteen million, nine hundred sixty-nine thousand, eight hundred nineteen".