81410154 has 48 divisors (see below), whose sum is σ = 192371904. Its totient is φ = 22498560.

The previous prime is 81410149. The next prime is 81410171. The reversal of 81410154 is 45101418.

It is a super-2 number, since 2×81410154² = 13255226348607432, which contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 39354 + ... + 41370.

It is an arithmetic number, because the mean of its divisors is an integer number (4007748).

Almost surely, 2^81410154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81410154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96185952).

81410154 is an abundant number, since it is smaller than the sum of its proper divisors (110961750).

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

81410154 is a wasteful number, since it uses less digits than its factorization.

81410154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 81410154 is about 9022.7575607460. The cubic root of 81410154 is about 433.4039436547.

The spelling of 81410154 in words is "eighty-one million, four hundred ten thousand, one hundred fifty-four".