38705879981 has 8 divisors (see below), whose sum is σ = 40656223104. Its totient is φ = 36777826800.

The previous prime is 38705879923. The next prime is 38705879983. The reversal of 38705879981 is 18997850783.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 38705879981 - 2¹⁴ = 38705863597 is a prime.

It is a super-2 number, since 2×38705879981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38705879983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5568926 + ... + 5575871.

It is an arithmetic number, because the mean of its divisors is an integer number (5082027888).

Almost surely, 2^38705879981 is an apocalyptic number.

It is an amenable number.

38705879981 is a deficient number, since it is larger than the sum of its proper divisors (1950343123).

38705879981 is a wasteful number, since it uses less digits than its factorization.

38705879981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11144971.

The product of its (nonzero) digits is 30481920, while the sum is 65.

The spelling of 38705879981 in words is "thirty-eight billion, seven hundred five million, eight hundred seventy-nine thousand, nine hundred eighty-one".