3846738581 has 24 divisors (see below), whose sum is σ = 4558860000. Its totient is φ = 3235456224.

The previous prime is 3846738557. The next prime is 3846738583. The reversal of 3846738581 is 1858376483.

It is not a de Polignac number, because 3846738581 - 2²⁶ = 3779629717 is a prime.

It is a super-2 number, since 2×3846738581² = 29594795421107787122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3846738583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2482595 + ... + 2484143.

It is an arithmetic number, because the mean of its divisors is an integer number (189952500).

Almost surely, 2^3846738581 is an apocalyptic number.

It is an amenable number.

3846738581 is a deficient number, since it is larger than the sum of its proper divisors (712121419).

3846738581 is a wasteful number, since it uses less digits than its factorization.

3846738581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481 (or 2474 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The square root of 3846738581 is about 62022.0813984826. The cubic root of 3846738581 is about 1566.8625160671.

The spelling of 3846738581 in words is "three billion, eight hundred forty-six million, seven hundred thirty-eight thousand, five hundred eighty-one".