3603701820 has 144 divisors (see below), whose sum is σ = 11067664608. Its totient is φ = 873062400.

The previous prime is 3603701789. The next prime is 3603701831. The reversal of 3603701820 is 281073063.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 855720 + ... + 859920.

It is an arithmetic number, because the mean of its divisors is an integer number (76858782).

Almost surely, 2^3603701820 is an apocalyptic number.

3603701820 is a gapful number since it is divisible by the number (30) 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 3603701820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5533832304).

3603701820 is an abundant number, since it is smaller than the sum of its proper divisors (7463962788).

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

3603701820 is a wasteful number, since it uses less digits than its factorization.

3603701820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288 (or 4257 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 3603701820 is about 60030.8405738251. The cubic root of 3603701820 is about 1533.1440069749.

Adding to 3603701820 its reverse (281073063), we get a palindrome (3884774883).

The spelling of 3603701820 in words is "three billion, six hundred three million, seven hundred one thousand, eight hundred twenty".