3601821400 has 24 divisors (see below), whose sum is σ = 8374235220. Its totient is φ = 1440728480.

The previous prime is 3601821383. The next prime is 3601821401. The reversal of 3601821400 is 41281063.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3601821401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9004354 + ... + 9004753.

Almost surely, 2^3601821400 is an apocalyptic number.

It is an amenable number.

3601821400 is an abundant number, since it is smaller than the sum of its proper divisors (4772413820).

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

3601821400 is a wasteful number, since it uses less digits than its factorization.

3601821400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18009123 (or 18009114 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 3601821400 is about 60015.1764139705. The cubic root of 3601821400 is about 1532.8772945417.

The spelling of 3601821400 in words is "three billion, six hundred one million, eight hundred twenty-one thousand, four hundred".