2385441638 has 4 divisors (see below), whose sum is σ = 3578162460. Its totient is φ = 1192720818.

The previous prime is 2385441631. The next prime is 2385441673. The reversal of 2385441638 is 8361445832.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2385441631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 596360408 + ... + 596360411.

It is an arithmetic number, because the mean of its divisors is an integer number (894540615).

Almost surely, 2^2385441638 is an apocalyptic number.

2385441638 is a deficient number, since it is larger than the sum of its proper divisors (1192720822).

2385441638 is a wasteful number, since it uses less digits than its factorization.

2385441638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192720821.

The product of its digits is 552960, while the sum is 44.

The square root of 2385441638 is about 48840.9831801122. The cubic root of 2385441638 is about 1336.1532279553.

The spelling of 2385441638 in words is "two billion, three hundred eighty-five million, four hundred forty-one thousand, six hundred thirty-eight".