3845743681 has 8 divisors (see below), whose sum is σ = 4321638720. Its totient is φ = 3395572752.

The previous prime is 3845743661. The next prime is 3845743687. The reversal of 3845743681 is 1863475483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3845743681 is a prime.

It is a super-2 number, since 2×3845743681² = 29579488919902859522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3845743687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6430711 + ... + 6431308.

It is an arithmetic number, because the mean of its divisors is an integer number (540204840).

Almost surely, 2^3845743681 is an apocalyptic number.

It is an amenable number.

3845743681 is a deficient number, since it is larger than the sum of its proper divisors (475895039).

3845743681 is a wasteful number, since it uses less digits than its factorization.

3845743681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12862055.

The product of its digits is 1935360, while the sum is 49.

The square root of 3845743681 is about 62014.0603492466. The cubic root of 3845743681 is about 1566.7274227582.

The spelling of 3845743681 in words is "three billion, eight hundred forty-five million, seven hundred forty-three thousand, six hundred eighty-one".