1815362224 has 40 divisors (see below), whose sum is σ = 3800294960. Its totient is φ = 835100928.

The previous prime is 1815362189. The next prime is 1815362231. The reversal of 1815362224 is 4222635181.

It is a self number, because there is not a number n which added to its sum of digits gives 1815362224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49642 + ... + 78070.

It is an arithmetic number, because the mean of its divisors is an integer number (95007374).

Almost surely, 2^1815362224 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 1815362224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900147480).

1815362224 is an abundant number, since it is smaller than the sum of its proper divisors (1984932736).

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

1815362224 is a wasteful number, since it uses less digits than its factorization.

1815362224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28757 (or 28751 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 1815362224 is about 42607.0677705002. The cubic root of 1815362224 is about 1219.8911987538.

The spelling of 1815362224 in words is "one billion, eight hundred fifteen million, three hundred sixty-two thousand, two hundred twenty-four".