2449189818 has 32 divisors (see below), whose sum is σ = 5462046720. Its totient is φ = 813486240.

The previous prime is 2449189783. The next prime is 2449189859. The reversal of 2449189818 is 8189819442.

It is a happy number.

2449189818 is a `hidden beast` number, since 2 + 449 + 189 + 8 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65530 + ... + 95877.

It is an arithmetic number, because the mean of its divisors is an integer number (170688960).

Almost surely, 2^2449189818 is an apocalyptic number.

2449189818 is an abundant number, since it is smaller than the sum of its proper divisors (3012856902).

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

2449189818 is a wasteful number, since it uses less digits than its factorization.

2449189818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161699 (or 161693 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 2449189818 is about 49489.2899322672. The cubic root of 2449189818 is about 1347.9511340286.

The spelling of 2449189818 in words is "two billion, four hundred forty-nine million, one hundred eighty-nine thousand, eight hundred eighteen".