1802002500 has 135 divisors (see below), whose sum is σ = 5712189483. Its totient is φ = 478836000.

The previous prime is 1802002483. The next prime is 1802002529. The reversal of 1802002500 is 52002081.

The square root of 1802002500 is 42450.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 141276996 + 1660725504 = 11886^2 + 40752^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 6367359 + ... + 6367641.

Almost surely, 2^1802002500 is an apocalyptic number.

1802002500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1802002500 is the 42450-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1802002500

1802002500 is an abundant number, since it is smaller than the sum of its proper divisors (3910186983).

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

1802002500 is an equidigital number, since it uses as much as digits as its factorization.

1802002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The cubic root of 1802002500 is about 1216.8913285843.

Adding to 1802002500 its reverse (52002081), we get a palindrome (1854004581).

The spelling of 1802002500 in words is "one billion, eight hundred two million, two thousand, five hundred".