81048983 has 2 divisors, whose sum is σ = 81048984. Its totient is φ = 81048982.

The previous prime is 81048977. The next prime is 81049019. The reversal of 81048983 is 38984018.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81048983 - 2¹⁴ = 81032599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81048983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81048283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40524491 + 40524492.

It is an arithmetic number, because the mean of its divisors is an integer number (40524492).

Almost surely, 2^81048983 is an apocalyptic number.

81048983 is a deficient number, since it is larger than the sum of its proper divisors (1).

81048983 is an equidigital number, since it uses as much as digits as its factorization.

81048983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 81048983 is about 9002.7208664936. The cubic root of 81048983 is about 432.7620704441.

The spelling of 81048983 in words is "eighty-one million, forty-eight thousand, nine hundred eighty-three".