6138545213 has 4 divisors (see below), whose sum is σ = 6461626560. Its totient is φ = 5815463868.

The previous prime is 6138545183. The next prime is 6138545227. The reversal of 6138545213 is 3125458316.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6138545213 - 2²² = 6134350909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138545243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161540645 + ... + 161540682.

It is an arithmetic number, because the mean of its divisors is an integer number (1615406640).

Almost surely, 2^6138545213 is an apocalyptic number.

It is an amenable number.

6138545213 is a deficient number, since it is larger than the sum of its proper divisors (323081347).

6138545213 is a wasteful number, since it uses less digits than its factorization.

6138545213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323081346.

The product of its digits is 86400, while the sum is 38.

The square root of 6138545213 is about 78348.8686134012. The cubic root of 6138545213 is about 1831.0005987461. Note that the first 3 decimals are identical.

The spelling of 6138545213 in words is "six billion, one hundred thirty-eight million, five hundred forty-five thousand, two hundred thirteen".