81140483 has 8 divisors (see below), whose sum is σ = 82328400. Its totient is φ = 79961440.

The previous prime is 81140467. The next prime is 81140537. The reversal of 81140483 is 38404118.

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

It is a cyclic number.

It is not a de Polignac number, because 81140483 - 2⁴ = 81140467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81140443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17441 + ... + 21597.

It is an arithmetic number, because the mean of its divisors is an integer number (10291050).

Almost surely, 2^81140483 is an apocalyptic number.

81140483 is a deficient number, since it is larger than the sum of its proper divisors (1187917).

81140483 is a wasteful number, since it uses less digits than its factorization.

81140483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 81140483 is about 9007.8012300450. The cubic root of 81140483 is about 432.9248643335.

The spelling of 81140483 in words is "eighty-one million, one hundred forty thousand, four hundred eighty-three".