385657481 has 8 divisors (see below), whose sum is σ = 420876864. Its totient is φ = 350464720.

The previous prime is 385657451. The next prime is 385657483. The reversal of 385657481 is 184756583.

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

It is a cyclic number.

It is not a de Polignac number, because 385657481 - 2⁶ = 385657417 is a prime.

It is a super-2 number, since 2×385657481² = 297463385302530722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (385657483) 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, 35015 + ... + 44691.

It is an arithmetic number, because the mean of its divisors is an integer number (52609608).

Almost surely, 2^385657481 is an apocalyptic number.

It is an amenable number.

385657481 is a deficient number, since it is larger than the sum of its proper divisors (35219383).

385657481 is a wasteful number, since it uses less digits than its factorization.

385657481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13311.

The product of its digits is 806400, while the sum is 47.

The square root of 385657481 is about 19638.1638907511. The cubic root of 385657481 is about 727.8925148491.

The spelling of 385657481 in words is "three hundred eighty-five million, six hundred fifty-seven thousand, four hundred eighty-one".