618020816 has 20 divisors (see below), whose sum is σ = 1368474912. Its totient is φ = 264866016.

The previous prime is 618020789. The next prime is 618020861.

618020816 is nontrivially palindromic in base 10.

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, 2758910 + ... + 2759133.

Almost surely, 2^618020816 is an apocalyptic number.

It is an amenable number.

618020816 is an abundant number, since it is smaller than the sum of its proper divisors (750454096).

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

618020816 is a wasteful number, since it uses less digits than its factorization.

618020816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518058 (or 5518052 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 618020816 is about 24860.0244569469. The cubic root of 618020816 is about 851.7935902959.

The spelling of 618020816 in words is "six hundred eighteen million, twenty thousand, eight hundred sixteen".