38291456849 has 4 divisors (see below), whose sum is σ = 38318254260. Its totient is φ = 38264659440.

The previous prime is 38291456813. The next prime is 38291456909. The reversal of 38291456849 is 94865419283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94865419283 = 1069 ⋅88742207.

It can be written as a sum of positive squares in 2 ways, for example, as 22243634449 + 16047822400 = 149143^2 + 126680^2 .

It is a cyclic number.

It is not a de Polignac number, because 38291456849 - 2²⁴ = 38274679633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38291456549) 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, 13396562 + ... + 13399419.

It is an arithmetic number, because the mean of its divisors is an integer number (9579563565).

Almost surely, 2^38291456849 is an apocalyptic number.

It is an amenable number.

38291456849 is a deficient number, since it is larger than the sum of its proper divisors (26797411).

38291456849 is a wasteful number, since it uses less digits than its factorization.

38291456849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26797410.

The product of its digits is 14929920, while the sum is 59.

The spelling of 38291456849 in words is "thirty-eight billion, two hundred ninety-one million, four hundred fifty-six thousand, eight hundred forty-nine".