1800220608 has 84 divisors (see below), whose sum is σ = 5165846920. Its totient is φ = 599394816.

The previous prime is 1800220601. The next prime is 1800220619. The reversal of 1800220608 is 8060220081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800220601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005378 + ... + 1007166.

Almost surely, 2^1800220608 is an apocalyptic number.

1800220608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1800220608 is an abundant number, since it is smaller than the sum of its proper divisors (3365626312).

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

1800220608 is a wasteful number, since it uses less digits than its factorization.

1800220608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554 (or 3541 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1800220608 is about 42429.0066817502. The cubic root of 1800220608 is about 1216.4900927297.

Adding to 1800220608 its reverse (8060220081), we get a palindrome (9860440689).

The spelling of 1800220608 in words is "one billion, eight hundred million, two hundred twenty thousand, six hundred eight".