81174338 has 16 divisors (see below), whose sum is σ = 140046144. Its totient is φ = 34566480.

The previous prime is 81174257. The next prime is 81174349. The reversal of 81174338 is 83347118.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 81174298 and 81174307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16268 + ... + 20663.

It is an arithmetic number, because the mean of its divisors is an integer number (8752884).

Almost surely, 2^81174338 is an apocalyptic number.

81174338 is a deficient number, since it is larger than the sum of its proper divisors (58871806).

81174338 is a wasteful number, since it uses less digits than its factorization.

81174338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37097.

The product of its digits is 16128, while the sum is 35.

The square root of 81174338 is about 9009.6802384990. The cubic root of 81174338 is about 432.9850670534.

The spelling of 81174338 in words is "eighty-one million, one hundred seventy-four thousand, three hundred thirty-eight".