3737720820 has 96 divisors (see below), whose sum is σ = 10791728640. Its totient is φ = 966026880.

The previous prime is 3737720803. The next prime is 3737720821. The reversal of 3737720820 is 280277373.

It is a super-2 number, since 2×3737720820² = 27941113856522944800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3737720821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332451 + ... + 343509.

It is an arithmetic number, because the mean of its divisors is an integer number (112413840).

Almost surely, 2^3737720820 is an apocalyptic number.

3737720820 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 3737720820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5395864320).

3737720820 is an abundant number, since it is smaller than the sum of its proper divisors (7054007820).

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

3737720820 is a wasteful number, since it uses less digits than its factorization.

3737720820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11245 (or 11243 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 3737720820 is about 61136.9022767755. The cubic root of 3737720820 is about 1551.9186535153.

The spelling of 3737720820 in words is "three billion, seven hundred thirty-seven million, seven hundred twenty thousand, eight hundred twenty".