1814220604 has 12 divisors (see below), whose sum is σ = 3628441264. Its totient is φ = 777523104.

The previous prime is 1814220587. The next prime is 1814220623. The reversal of 1814220604 is 4060224181.

1814220604 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 64793593 = 1814220604 / (1 + 8 + 1 + 4 + 2 + 2 + 0 + 6 + 0 + 4).

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, 32396769 + ... + 32396824.

Almost surely, 2^1814220604 is an apocalyptic number.

1814220604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1814220604 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1814220604 is a wasteful number, since it uses less digits than its factorization.

1814220604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64793604 (or 64793602 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1814220604 is about 42593.6685905312. The cubic root of 1814220604 is about 1219.6354290044.

Adding to 1814220604 its reverse (4060224181), we get a palindrome (5874444785).

The spelling of 1814220604 in words is "one billion, eight hundred fourteen million, two hundred twenty thousand, six hundred four".