385193281 has 8 divisors (see below), whose sum is σ = 421699104. Its totient is φ = 348935520.

The previous prime is 385193279. The next prime is 385193297. The reversal of 385193281 is 182391583.

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 385193281 - 2¹ = 385193279 is a prime.

It is a super-2 number, since 2×385193281² = 296747727455089922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385193201) 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, 58756 + ... + 64981.

It is an arithmetic number, because the mean of its divisors is an integer number (52712388).

Almost surely, 2^385193281 is an apocalyptic number.

It is an amenable number.

385193281 is a deficient number, since it is larger than the sum of its proper divisors (36505823).

385193281 is a wasteful number, since it uses less digits than its factorization.

385193281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124031.

The product of its digits is 51840, while the sum is 40.

The square root of 385193281 is about 19626.3415082893. The cubic root of 385193281 is about 727.6003528661.

The spelling of 385193281 in words is "three hundred eighty-five million, one hundred ninety-three thousand, two hundred eighty-one".