81410958 has 12 divisors (see below), whose sum is σ = 176390448. Its totient is φ = 27136980.

The previous prime is 81410957. The next prime is 81410969. The reversal of 81410958 is 85901418.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81410957) 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, 2261398 + ... + 2261433.

It is an arithmetic number, because the mean of its divisors is an integer number (14699204).

Almost surely, 2^81410958 is an apocalyptic number.

81410958 is an abundant number, since it is smaller than the sum of its proper divisors (94979490).

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

81410958 is a wasteful number, since it uses less digits than its factorization.

81410958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522839 (or 4522836 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 81410958 is about 9022.8021146427. The cubic root of 81410958 is about 433.4053704040.

The spelling of 81410958 in words is "eighty-one million, four hundred ten thousand, nine hundred fifty-eight".