6138390085 has 8 divisors (see below), whose sum is σ = 7377745536. Its totient is φ = 4902927120.

The previous prime is 6138390061. The next prime is 6138390119. The reversal of 6138390085 is 5800938316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6138390085 - 2⁵ = 6138390053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969649 + ... + 975958.

It is an arithmetic number, because the mean of its divisors is an integer number (922218192).

Almost surely, 2^6138390085 is an apocalyptic number.

It is an amenable number.

6138390085 is a deficient number, since it is larger than the sum of its proper divisors (1239355451).

6138390085 is a wasteful number, since it uses less digits than its factorization.

6138390085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946243.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 6138390085 is about 78347.8786247592. The cubic root of 6138390085 is about 1830.9851747955.

The spelling of 6138390085 in words is "six billion, one hundred thirty-eight million, three hundred ninety thousand, eighty-five".