3937321892 has 72 divisors (see below), whose sum is σ = 8455033440. Its totient is φ = 1595220480.

The previous prime is 3937321891. The next prime is 3937321897. The reversal of 3937321892 is 2981237393.

It is a super-3 number, since 3×3937321892³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3937321891) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2505467 + ... + 2507037.

It is an arithmetic number, because the mean of its divisors is an integer number (117431020).

Almost surely, 2^3937321892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3937321892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4227516720).

3937321892 is an abundant number, since it is smaller than the sum of its proper divisors (4517711548).

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

3937321892 is a wasteful number, since it uses less digits than its factorization.

3937321892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281 (or 2272 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 3937321892 is about 62748.0827754920. The cubic root of 3937321892 is about 1579.0660896546.

The spelling of 3937321892 in words is "three billion, nine hundred thirty-seven million, three hundred twenty-one thousand, eight hundred ninety-two".