1864228608 has 270 divisors, whose sum is σ = 6118301112. Its totient is φ = 564157440.

The previous prime is 1864228607. The next prime is 1864228651. The reversal of 1864228608 is 8068224681.

1864228608 is a `hidden beast` number, since 18 + 6 + 4 + 2 + 28 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864228601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2508685 + ... + 2509427.

Almost surely, 2^1864228608 is an apocalyptic number.

1864228608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1864228608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3059150556).

1864228608 is an abundant number, since it is smaller than the sum of its proper divisors (4254072504).

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

1864228608 is an equidigital number, since it uses as much as digits as its factorization.

1864228608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 1864228608 is about 43176.7137239508. The cubic root of 1864228608 is about 1230.7402088285.

The spelling of 1864228608 in words is "one billion, eight hundred sixty-four million, two hundred twenty-eight thousand, six hundred eight".