81098853 has 16 divisors (see below), whose sum is σ = 118444032. Its totient is φ = 48950000.

The previous prime is 81098837. The next prime is 81098867. The reversal of 81098853 is 35889018.

It is not a de Polignac number, because 81098853 - 2⁴ = 81098837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81098803) 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, 3388 + ... + 13178.

It is an arithmetic number, because the mean of its divisors is an integer number (7402752).

Almost surely, 2^81098853 is an apocalyptic number.

It is an amenable number.

81098853 is a deficient number, since it is larger than the sum of its proper divisors (37345179).

81098853 is a wasteful number, since it uses less digits than its factorization.

81098853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 81098853 is about 9005.4901587865. The cubic root of 81098853 is about 432.8508127440.

The spelling of 81098853 in words is "eighty-one million, ninety-eight thousand, eight hundred fifty-three".