81488126 has 8 divisors (see below), whose sum is σ = 127546704. Its totient is φ = 38972560.

The previous prime is 81488117. The next prime is 81488159. The reversal of 81488126 is 62188418.

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

It is a super-3 number, since 3×81488126³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81488126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885695 + ... + 885786.

It is an arithmetic number, because the mean of its divisors is an integer number (15943338).

Almost surely, 2^81488126 is an apocalyptic number.

81488126 is a deficient number, since it is larger than the sum of its proper divisors (46058578).

81488126 is a wasteful number, since it uses less digits than its factorization.

81488126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771506.

The product of its digits is 24576, while the sum is 38.

The square root of 81488126 is about 9027.0773786425. The cubic root of 81488126 is about 433.5422662416.

The spelling of 81488126 in words is "eighty-one million, four hundred eighty-eight thousand, one hundred twenty-six".