618644332 has 24 divisors (see below), whose sum is σ = 1146622400. Its totient is φ = 291238416.

The previous prime is 618644309. The next prime is 618644347. The reversal of 618644332 is 233446816.

It is a junction number, because it is equal to n+sod(n) for n = 618644291 and 618644300.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12582 + ... + 37357.

Almost surely, 2^618644332 is an apocalyptic number.

It is an amenable number.

618644332 is a deficient number, since it is larger than the sum of its proper divisors (527978068).

618644332 is a wasteful number, since it uses less digits than its factorization.

618644332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50125 (or 50123 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 618644332 is about 24872.5618302579. The cubic root of 618644332 is about 852.0799498104.

The spelling of 618644332 in words is "six hundred eighteen million, six hundred forty-four thousand, three hundred thirty-two".