6139358405 has 18 divisors (see below), whose sum is σ = 7493157126. Its totient is φ = 4828930128.

The previous prime is 6139358387. The next prime is 6139358429. The reversal of 6139358405 is 5048539316.

It can be written as a sum of positive squares in only one way, i.e., 4911486724 + 1227871681 = 70082^2 + 35041^2 .

It is not a de Polignac number, because 6139358405 - 2⁶ = 6139358341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11738474 + ... + 11738996.

It is an arithmetic number, because the mean of its divisors is an integer number (416286507).

Almost surely, 2^6139358405 is an apocalyptic number.

It is an amenable number.

6139358405 is a deficient number, since it is larger than the sum of its proper divisors (1353798721).

6139358405 is an frugal number, since it uses more digits than its factorization.

6139358405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 6139358405 is about 78354.0579995701. The cubic root of 6139358405 is about 1831.0814479399.

The spelling of 6139358405 in words is "six billion, one hundred thirty-nine million, three hundred fifty-eight thousand, four hundred five".