385438157 has 4 divisors (see below), whose sum is σ = 415087260. Its totient is φ = 355789056.

The previous prime is 385438099. The next prime is 385438181. The reversal of 385438157 is 751834583.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751834583 = 2963 ⋅253741.

It can be written as a sum of positive squares in 2 ways, for example, as 210511081 + 174927076 = 14509^2 + 13226^2 .

It is a cyclic number.

It is not a de Polignac number, because 385438157 - 2¹² = 385434061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385438057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14824532 + ... + 14824557.

It is an arithmetic number, because the mean of its divisors is an integer number (103771815).

Almost surely, 2^385438157 is an apocalyptic number.

It is an amenable number.

385438157 is a deficient number, since it is larger than the sum of its proper divisors (29649103).

385438157 is a wasteful number, since it uses less digits than its factorization.

385438157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29649102.

The product of its digits is 403200, while the sum is 44.

The square root of 385438157 is about 19632.5789696616. The cubic root of 385438157 is about 727.7545041542.

The spelling of 385438157 in words is "three hundred eighty-five million, four hundred thirty-eight thousand, one hundred fifty-seven".