81095364 has 48 divisors (see below), whose sum is σ = 240284800. Its totient is φ = 23169888.

The previous prime is 81095341. The next prime is 81095383. The reversal of 81095364 is 46359018.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52879 + ... + 54390.

Almost surely, 2^81095364 is an apocalyptic number.

81095364 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

81095364 is an abundant number, since it is smaller than the sum of its proper divisors (159189436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81095364 is a wasteful number, since it uses less digits than its factorization.

81095364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107289 (or 107281 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 81095364 is about 9005.2964415393. The cubic root of 81095364 is about 432.8446053478.

The spelling of 81095364 in words is "eighty-one million, ninety-five thousand, three hundred sixty-four".