38864525143849 has 4 divisors (see below), whose sum is σ = 40118219503360. Its totient is φ = 37610830784340.

The previous prime is 38864525143831. The next prime is 38864525143861. The reversal of 38864525143849 is 94834152546883.

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 38864525143849 - 2⁵ = 38864525143817 is a prime.

It is a super-2 number, since 2×38864525143849² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38864525143819) 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, 626847179709 + ... + 626847179770.

It is an arithmetic number, because the mean of its divisors is an integer number (10029554875840).

Almost surely, 2^{38864525143849} is an apocalyptic number.

It is an amenable number.

38864525143849 is a deficient number, since it is larger than the sum of its proper divisors (1253694359511).

38864525143849 is a wasteful number, since it uses less digits than its factorization.

38864525143849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253694359510.

The product of its digits is 796262400, while the sum is 70.

The spelling of 38864525143849 in words is "thirty-eight trillion, eight hundred sixty-four billion, five hundred twenty-five million, one hundred forty-three thousand, eight hundred forty-nine".