618487228 has 6 divisors (see below), whose sum is σ = 1082352656. Its totient is φ = 309243612.

The previous prime is 618487211. The next prime is 618487237. The reversal of 618487228 is 822784816.

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 as a sum of consecutive naturals, namely, 77310900 + ... + 77310907.

Almost surely, 2^618487228 is an apocalyptic number.

It is an amenable number.

618487228 is a deficient number, since it is larger than the sum of its proper divisors (463865428).

618487228 is a wasteful number, since it uses less digits than its factorization.

618487228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154621811 (or 154621809 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 618487228 is about 24869.4034508269. The cubic root of 618487228 is about 852.0078154705.

The spelling of 618487228 in words is "six hundred eighteen million, four hundred eighty-seven thousand, two hundred twenty-eight".