618219968 has 28 divisors (see below), whose sum is σ = 1227609432. Its totient is φ = 308901120.

The previous prime is 618219919. The next prime is 618219983. The reversal of 618219968 is 869912816.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142958 + ... + 147218.

It is an arithmetic number, because the mean of its divisors is an integer number (43843194).

Almost surely, 2^618219968 is an apocalyptic number.

It is an amenable number.

618219968 is a deficient number, since it is larger than the sum of its proper divisors (609389464).

618219968 is a wasteful number, since it uses less digits than its factorization.

618219968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6540 (or 6530 counting only the distinct ones).

The product of its digits is 373248, while the sum is 50.

The square root of 618219968 is about 24864.0296010120. The cubic root of 618219968 is about 851.8850749054.

The spelling of 618219968 in words is "six hundred eighteen million, two hundred nineteen thousand, nine hundred sixty-eight".