3537980820 has 144 divisors (see below), whose sum is σ = 11726140608. Its totient is φ = 856327680.

The previous prime is 3537980783. The next prime is 3537980821. The reversal of 3537980820 is 280897353.

3537980820 is a `hidden beast` number, since 3 + 537 + 98 + 0 + 8 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3537980821) 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, 1854307 + ... + 1856213.

It is an arithmetic number, because the mean of its divisors is an integer number (81431532).

Almost surely, 2^3537980820 is an apocalyptic number.

3537980820 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 3537980820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5863070304).

3537980820 is an abundant number, since it is smaller than the sum of its proper divisors (8188159788).

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

3537980820 is a wasteful number, since it uses less digits than its factorization.

3537980820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870 (or 2865 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 3537980820 is about 59480.9282039210. The cubic root of 3537980820 is about 1523.7667456682.

The spelling of 3537980820 in words is "three billion, five hundred thirty-seven million, nine hundred eighty thousand, eight hundred twenty".