81148010 has 32 divisors (see below), whose sum is σ = 150508800. Its totient is φ = 31487040.

The previous prime is 81147973. The next prime is 81148019. The reversal of 81148010 is 1084118.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81148019) 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 15 ways as a sum of consecutive naturals, for example, 45740 + ... + 47480.

It is an arithmetic number, because the mean of its divisors is an integer number (4703400).

Almost surely, 2^81148010 is an apocalyptic number.

81148010 is a deficient number, since it is larger than the sum of its proper divisors (69360790).

81148010 is a wasteful number, since it uses less digits than its factorization.

81148010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 81148010 is about 9008.2190248683. The cubic root of 81148010 is about 432.9382506835.

The spelling of 81148010 in words is "eighty-one million, one hundred forty-eight thousand, ten".