81095895 has 24 divisors (see below), whose sum is σ = 147966000. Its totient is φ = 40974336.

The previous prime is 81095887. The next prime is 81095921. The reversal of 81095895 is 59859018.

It is not a de Polignac number, because 81095895 - 2³ = 81095887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 81095895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46570 + ... + 48279.

It is an arithmetic number, because the mean of its divisors is an integer number (6165250).

Almost surely, 2^81095895 is an apocalyptic number.

81095895 is a deficient number, since it is larger than the sum of its proper divisors (66870105).

81095895 is a wasteful number, since it uses less digits than its factorization.

81095895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94879 (or 94876 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 81095895 is about 9005.3259241407. The cubic root of 81095895 is about 432.8455500791.

The spelling of 81095895 in words is "eighty-one million, ninety-five thousand, eight hundred ninety-five".