1802806488 has 192 divisors, whose sum is σ = 6064281600. Its totient is φ = 472158720.

The previous prime is 1802806487. The next prime is 1802806553. The reversal of 1802806488 is 8846082081.

It is a happy number.

It is a super-2 number, since 2×1802806488² = 6500222466349788288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802806487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293820 + ... + 299892.

It is an arithmetic number, because the mean of its divisors is an integer number (31584800).

Almost surely, 2^1802806488 is an apocalyptic number.

1802806488 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 1802806488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3032140800).

1802806488 is an abundant number, since it is smaller than the sum of its proper divisors (4261475112).

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

1802806488 is a wasteful number, since it uses less digits than its factorization.

1802806488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6142 (or 6135 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 1802806488 is about 42459.4687672844. The cubic root of 1802806488 is about 1217.0722792319.

The spelling of 1802806488 in words is "one billion, eight hundred two million, eight hundred six thousand, four hundred eighty-eight".