81848829 has 16 divisors (see below), whose sum is σ = 116337600. Its totient is φ = 51006720.

The previous prime is 81848807. The next prime is 81848839. The reversal of 81848829 is 92884818.

It is not a de Polignac number, because 81848829 - 2⁵ = 81848797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81848839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2214 + ... + 12984.

It is an arithmetic number, because the mean of its divisors is an integer number (7271100).

Almost surely, 2^81848829 is an apocalyptic number.

It is an amenable number.

81848829 is a deficient number, since it is larger than the sum of its proper divisors (34488771).

81848829 is a wasteful number, since it uses less digits than its factorization.

81848829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10940.

The product of its digits is 294912, while the sum is 48.

The square root of 81848829 is about 9047.0342654375. The cubic root of 81848829 is about 434.1810088964.

The spelling of 81848829 in words is "eighty-one million, eight hundred forty-eight thousand, eight hundred twenty-nine".