3621881052 has 18 divisors (see below), whose sum is σ = 9155310528. Its totient is φ = 1207293672.

The previous prime is 3621881033. The next prime is 3621881069. The reversal of 3621881052 is 2501881263.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 100607807 = 3621881052 / (3 + 6 + 2 + 1 + 8 + 8 + 1 + 0 + 5 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 3621880998 and 3621881016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50303868 + ... + 50303939.

Almost surely, 2^3621881052 is an apocalyptic number.

It is an amenable number.

3621881052 is an abundant number, since it is smaller than the sum of its proper divisors (5533429476).

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

3621881052 is a wasteful number, since it uses less digits than its factorization.

3621881052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100607817 (or 100607812 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 3621881052 is about 60182.0658668344. The cubic root of 3621881052 is about 1535.7177164768.

The spelling of 3621881052 in words is "three billion, six hundred twenty-one million, eight hundred eighty-one thousand, fifty-two".