385388146 has 24 divisors (see below), whose sum is σ = 684296172. Its totient is φ = 161700000.

The previous prime is 385388141. The next prime is 385388183. The reversal of 385388146 is 641883583.

It can be written as a sum of positive squares in 2 ways, for example, as 370986121 + 14402025 = 19261^2 + 3795^2 .

It is a junction number, because it is equal to n+sod(n) for n = 385388096 and 385388105.

It is not an unprimeable number, because it can be changed into a prime (385388141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58105 + ... + 64396.

Almost surely, 2^385388146 is an apocalyptic number.

385388146 is a deficient number, since it is larger than the sum of its proper divisors (298908026).

385388146 is a wasteful number, since it uses less digits than its factorization.

385388146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122538 (or 122527 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 385388146 is about 19631.3052546182. The cubic root of 385388146 is about 727.7230271593.

The spelling of 385388146 in words is "three hundred eighty-five million, three hundred eighty-eight thousand, one hundred forty-six".