618861348 has 144 divisors (see below), whose sum is σ = 1837215744. Its totient is φ = 172005120.

The previous prime is 618861311. The next prime is 618861359. The reversal of 618861348 is 843168816.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1952086 + ... + 1952402.

Almost surely, 2^618861348 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618861348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918607872).

618861348 is an abundant number, since it is smaller than the sum of its proper divisors (1218354396).

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

618861348 is a wasteful number, since it uses less digits than its factorization.

618861348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 517 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 618861348 is about 24876.9240059940. The cubic root of 618861348 is about 852.1795726765.

The spelling of 618861348 in words is "six hundred eighteen million, eight hundred sixty-one thousand, three hundred forty-eight".