3852615780 has 144 divisors (see below), whose sum is σ = 13019413680. Its totient is φ = 915618816.

The previous prime is 3852615719. The next prime is 3852615797. The reversal of 3852615780 is 875162583.

3852615780 is a `hidden beast` number, since 38 + 526 + 15 + 7 + 80 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 528632064 + 3323983716 = 22992^2 + 57654^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39474 + ... + 96246.

It is an arithmetic number, because the mean of its divisors is an integer number (90412595).

Almost surely, 2^3852615780 is an apocalyptic number.

3852615780 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 3852615780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6509706840).

3852615780 is an abundant number, since it is smaller than the sum of its proper divisors (9166797900).

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

3852615780 is a wasteful number, since it uses less digits than its factorization.

3852615780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56830 (or 56825 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 3852615780 is about 62069.4432067825. The cubic root of 3852615780 is about 1567.6600814815.

The spelling of 3852615780 in words is "three billion, eight hundred fifty-two million, six hundred fifteen thousand, seven hundred eighty".