385138601 has 4 divisors (see below), whose sum is σ = 386242500. Its totient is φ = 384034704.

The previous prime is 385138591. The next prime is 385138603. The reversal of 385138601 is 106831583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106831583 = 1433 ⋅74551.

It can be written as a sum of positive squares in 2 ways, for example, as 187032976 + 198105625 = 13676^2 + 14075^2 .

It is a cyclic number.

It is not a de Polignac number, because 385138601 - 2¹⁴ = 385122217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (385138603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551426 + ... + 552123.

It is an arithmetic number, because the mean of its divisors is an integer number (96560625).

Almost surely, 2^385138601 is an apocalyptic number.

It is an amenable number.

385138601 is a deficient number, since it is larger than the sum of its proper divisors (1103899).

385138601 is a wasteful number, since it uses less digits than its factorization.

385138601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103898.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 385138601 is about 19624.9484330533. The cubic root of 385138601 is about 727.5659224714.

The spelling of 385138601 in words is "three hundred eighty-five million, one hundred thirty-eight thousand, six hundred one".