38401820385 has 32 divisors (see below), whose sum is σ = 61629050880. Its totient is φ = 20419012800.

The previous prime is 38401820357. The next prime is 38401820389. The reversal of 38401820385 is 58302810483.

38401820385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38401820385 - 2¹² = 38401816289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38401820389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10998490 + ... + 11001980.

It is an arithmetic number, because the mean of its divisors is an integer number (1925907840).

Almost surely, 2^38401820385 is an apocalyptic number.

It is an amenable number.

38401820385 is a deficient number, since it is larger than the sum of its proper divisors (23227230495).

38401820385 is a wasteful number, since it uses less digits than its factorization.

38401820385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 38401820385 in words is "thirty-eight billion, four hundred one million, eight hundred twenty thousand, three hundred eighty-five".