3721844837 has 4 divisors (see below), whose sum is σ = 3822435276. Its totient is φ = 3621254400.

The previous prime is 3721844827. The next prime is 3721844869. The reversal of 3721844837 is 7384481273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1759886401 + 1961958436 = 41951^2 + 44294^2 .

It is a cyclic number.

It is not a de Polignac number, because 3721844837 - 2⁴ = 3721844821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3721844791 and 3721844800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721844827) 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 3 ways as a sum of consecutive naturals, for example, 50295164 + ... + 50295237.

It is an arithmetic number, because the mean of its divisors is an integer number (955608819).

Almost surely, 2^3721844837 is an apocalyptic number.

3721844837 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3721844837 is a deficient number, since it is larger than the sum of its proper divisors (100590439).

3721844837 is a wasteful number, since it uses less digits than its factorization.

3721844837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100590438.

The product of its digits is 903168, while the sum is 47.

The square root of 3721844837 is about 61006.9245004204. The cubic root of 3721844837 is about 1549.7182751241.

The spelling of 3721844837 in words is "three billion, seven hundred twenty-one million, eight hundred forty-four thousand, eight hundred thirty-seven".