38913243011 has 4 divisors (see below), whose sum is σ = 38915137224. Its totient is φ = 38911348800.

The previous prime is 38913242971. The next prime is 38913243041. The reversal of 38913243011 is 11034231983.

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 38913243011 - 2¹⁰ = 38913241987 is a prime.

It is a super-2 number, since 2×38913243011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38913243041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915950 + ... + 957491.

It is an arithmetic number, because the mean of its divisors is an integer number (9728784306).

Almost surely, 2^38913243011 is an apocalyptic number.

38913243011 is a deficient number, since it is larger than the sum of its proper divisors (1894213).

38913243011 is a wasteful number, since it uses less digits than its factorization.

38913243011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894212.

The product of its (nonzero) digits is 15552, while the sum is 35.

Adding to 38913243011 its reverse (11034231983), we get a palindrome (49947474994).

The spelling of 38913243011 in words is "thirty-eight billion, nine hundred thirteen million, two hundred forty-three thousand, eleven".