81354014 has 12 divisors (see below), whose sum is σ = 141954624. Its totient is φ = 34865964.

The previous prime is 81353999. The next prime is 81354017. The reversal of 81354014 is 41045318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81354017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 414974 + ... + 415169.

It is an arithmetic number, because the mean of its divisors is an integer number (11829552).

Almost surely, 2^81354014 is an apocalyptic number.

81354014 is a deficient number, since it is larger than the sum of its proper divisors (60600610).

81354014 is a wasteful number, since it uses less digits than its factorization.

81354014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830159 (or 830152 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 81354014 is about 9019.6460019227. The cubic root of 81354014 is about 433.3042964107.

The spelling of 81354014 in words is "eighty-one million, three hundred fifty-four thousand, fourteen".