81196134 has 8 divisors (see below), whose sum is σ = 162392280. Its totient is φ = 27065376.

The previous prime is 81196117. The next prime is 81196151. The reversal of 81196134 is 43169118.

It is an interprime number because it is at equal distance from previous prime (81196117) and next prime (81196151).

It is a sphenic number, since it is the product of 3 distinct primes.

81196134 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 81196095 and 81196104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6766339 + ... + 6766350.

It is an arithmetic number, because the mean of its divisors is an integer number (20299035).

Almost surely, 2^81196134 is an apocalyptic number.

81196134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81196134 is a wasteful number, since it uses less digits than its factorization.

81196134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532694.

The product of its digits is 5184, while the sum is 33.

The square root of 81196134 is about 9010.8897451916. The cubic root of 81196134 is about 433.0238169762.

The spelling of 81196134 in words is "eighty-one million, one hundred ninety-six thousand, one hundred thirty-four".