3784721850 has 288 divisors, whose sum is σ = 12950421120. Its totient is φ = 770757120.

The previous prime is 3784721839. The next prime is 3784721851. The reversal of 3784721850 is 581274873.

3784721850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 3784721796 and 3784721805.

It is not an unprimeable number, because it can be changed into a prime (3784721851) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1185957 + ... + 1189143.

It is an arithmetic number, because the mean of its divisors is an integer number (44966740).

Almost surely, 2^3784721850 is an apocalyptic number.

3784721850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3784721850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6475210560).

3784721850 is an abundant number, since it is smaller than the sum of its proper divisors (9165699270).

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

3784721850 is a wasteful number, since it uses less digits than its factorization.

3784721850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254 (or 3246 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 3784721850 is about 61520.0930590974. The cubic root of 3784721850 is about 1558.3965897156.

The spelling of 3784721850 in words is "three billion, seven hundred eighty-four million, seven hundred twenty-one thousand, eight hundred fifty".