3721411872 has 144 divisors (see below), whose sum is σ = 10987546752. Its totient is φ = 1193909760.

The previous prime is 3721411871. The next prime is 3721411873. The reversal of 3721411872 is 2781141273.

It is an interprime number because it is at equal distance from previous prime (3721411871) and next prime (3721411873).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3721411871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 823443 + ... + 827949.

It is an arithmetic number, because the mean of its divisors is an integer number (76302408).

Almost surely, 2^3721411872 is an apocalyptic number.

3721411872 is a gapful number since it is divisible by the number (32) 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 3721411872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5493773376).

3721411872 is an abundant number, since it is smaller than the sum of its proper divisors (7266134880).

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

3721411872 is a wasteful number, since it uses less digits than its factorization.

3721411872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631 (or 4620 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 3721411872 is about 61003.3759065841. The cubic root of 3721411872 is about 1549.6581794975.

The spelling of 3721411872 in words is "three billion, seven hundred twenty-one million, four hundred eleven thousand, eight hundred seventy-two".