3943252818 has 90 divisors (see below), whose sum is σ = 9243686517. Its totient is φ = 1214866080.

The previous prime is 3943252811. The next prime is 3943252849. The reversal of 3943252818 is 8182523493.

3943252818 is a `hidden beast` number, since 3 + 94 + 32 + 528 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2816106489 + 1127146329 = 53067^2 + 33573^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=44403.

It is a super-2 number, since 2×3943252818² = 31098485573329882248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3943252811) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 96176878 + ... + 96176918.

Almost surely, 2^3943252818 is an apocalyptic number.

3943252818 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3943252818

3943252818 is an abundant number, since it is smaller than the sum of its proper divisors (5300433699).

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

3943252818 is an frugal number, since it uses more digits than its factorization.

3943252818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 65 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 3943252818 is about 62795.3248100525. The cubic root of 3943252818 is about 1579.8585594158.

The spelling of 3943252818 in words is "three billion, nine hundred forty-three million, two hundred fifty-two thousand, eight hundred eighteen".