3845791818 has 32 divisors (see below), whose sum is σ = 9323133120. Its totient is φ = 1165391280.

The previous prime is 3845791793. The next prime is 3845791871. The reversal of 3845791818 is 8181975483.

3845791818 is a `hidden beast` number, since 3 + 8 + 457 + 9 + 181 + 8 = 666.

It is a super-2 number, since 2×3845791818² = 29580229414791490248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3236605 + ... + 3237792.

It is an arithmetic number, because the mean of its divisors is an integer number (291347910).

Almost surely, 2^3845791818 is an apocalyptic number.

3845791818 is an abundant number, since it is smaller than the sum of its proper divisors (5477341302).

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

3845791818 is a wasteful number, since it uses less digits than its factorization.

3845791818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474419 (or 6474413 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 3845791818 is about 62014.4484616287. The cubic root of 3845791818 is about 1566.7339596164.

The spelling of 3845791818 in words is "three billion, eight hundred forty-five million, seven hundred ninety-one thousand, eight hundred eighteen".