8138019307 has 4 divisors (see below), whose sum is σ = 8877839256. Its totient is φ = 7398199360.

The previous prime is 8138019293. The next prime is 8138019311. The reversal of 8138019307 is 7039108318.

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

It is a cyclic number.

It is not a de Polignac number, because 8138019307 - 2¹⁹ = 8137495019 is a prime.

It is a super-2 number, since 2×8138019307² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8138019307.

It is not an unprimeable number, because it can be changed into a prime (8138019317) 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, 369909958 + ... + 369909979.

It is an arithmetic number, because the mean of its divisors is an integer number (2219459814).

Almost surely, 2^8138019307 is an apocalyptic number.

8138019307 is a deficient number, since it is larger than the sum of its proper divisors (739819949).

8138019307 is a wasteful number, since it uses less digits than its factorization.

8138019307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739819948.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 8138019307 is about 90210.9711010806. The cubic root of 8138019307 is about 2011.4360921762.

The spelling of 8138019307 in words is "eight billion, one hundred thirty-eight million, nineteen thousand, three hundred seven".