618642316 has 12 divisors (see below), whose sum is σ = 1129694832. Its totient is φ = 295872368.

The previous prime is 618642229. The next prime is 618642347. The reversal of 618642316 is 613246816.

It is a happy 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, 3362095 + ... + 3362278.

It is an arithmetic number, because the mean of its divisors is an integer number (94141236).

Almost surely, 2^618642316 is an apocalyptic number.

It is an amenable number.

618642316 is a deficient number, since it is larger than the sum of its proper divisors (511052516).

618642316 is a wasteful number, since it uses less digits than its factorization.

618642316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724400 (or 6724398 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 618642316 is about 24872.5213036395. The cubic root of 618642316 is about 852.0790242409.

The spelling of 618642316 in words is "six hundred eighteen million, six hundred forty-two thousand, three hundred sixteen".