618838944 has 24 divisors (see below), whose sum is σ = 1624452480. Its totient is φ = 206279616.

The previous prime is 618838939. The next prime is 618838991. The reversal of 618838944 is 449838816.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×618838944² = 765923277222070272, which contains 22 as substring.

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, 3223024 + ... + 3223215.

It is an arithmetic number, because the mean of its divisors is an integer number (67685520).

Almost surely, 2^618838944 is an apocalyptic number.

It is an amenable number.

618838944 is an abundant number, since it is smaller than the sum of its proper divisors (1005613536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618838944 is a wasteful number, since it uses less digits than its factorization.

618838944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446252 (or 6446244 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 618838944 is about 24876.4737050893. The cubic root of 618838944 is about 852.1692890260.

The spelling of 618838944 in words is "six hundred eighteen million, eight hundred thirty-eight thousand, nine hundred forty-four".