618921046 has 8 divisors (see below), whose sum is σ = 931686264. Its totient is φ = 308358960.

The previous prime is 618921019. The next prime is 618921047. The reversal of 618921046 is 640129816.

It is a happy number.

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

It is a super-2 number, since 2×618921046² = 766126522363468232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 618920996 and 618921014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618921047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 550080 + ... + 551203.

It is an arithmetic number, because the mean of its divisors is an integer number (116460783).

Almost surely, 2^618921046 is an apocalyptic number.

618921046 is a deficient number, since it is larger than the sum of its proper divisors (312765218).

618921046 is a wasteful number, since it uses less digits than its factorization.

618921046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101566.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 618921046 is about 24878.1238440522. The cubic root of 618921046 is about 852.2069734185.

The spelling of 618921046 in words is "six hundred eighteen million, nine hundred twenty-one thousand, forty-six".