1863815222 has 8 divisors (see below), whose sum is σ = 2942866200. Its totient is φ = 882859824.

The previous prime is 1863815209. The next prime is 1863815243. The reversal of 1863815222 is 2225183681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 49047769 = 1863815222 / (1 + 8 + 6 + 3 + 8 + 1 + 5 + 2 + 2 + 2).

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, 24523847 + ... + 24523922.

It is an arithmetic number, because the mean of its divisors is an integer number (367858275).

Almost surely, 2^1863815222 is an apocalyptic number.

1863815222 is a deficient number, since it is larger than the sum of its proper divisors (1079050978).

1863815222 is a wasteful number, since it uses less digits than its factorization.

1863815222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49047790.

The product of its digits is 46080, while the sum is 38.

The square root of 1863815222 is about 43171.9263179210. The cubic root of 1863815222 is about 1230.6492313628.

The spelling of 1863815222 in words is "one billion, eight hundred sixty-three million, eight hundred fifteen thousand, two hundred twenty-two".