81658483 has 8 divisors (see below), whose sum is σ = 82298880. Its totient is φ = 81021000.

The previous prime is 81658459. The next prime is 81658501. The reversal of 81658483 is 38485618.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81658483 is a prime.

It is a super-2 number, since 2×81658483² = 13336215691722578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81658453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108358 + ... + 109108.

It is an arithmetic number, because the mean of its divisors is an integer number (10287360).

Almost surely, 2^81658483 is an apocalyptic number.

81658483 is a deficient number, since it is larger than the sum of its proper divisors (640397).

81658483 is a wasteful number, since it uses less digits than its factorization.

81658483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457.

The product of its digits is 184320, while the sum is 43.

The square root of 81658483 is about 9036.5083411681. The cubic root of 81658483 is about 433.8441734247.

The spelling of 81658483 in words is "eighty-one million, six hundred fifty-eight thousand, four hundred eighty-three".