81148114 has 16 divisors (see below), whose sum is σ = 124320888. Its totient is φ = 39716352.

The previous prime is 81148099. The next prime is 81148127. The reversal of 81148114 is 41184118.

It can be written as a sum of positive squares in 4 ways, for example, as 73667889 + 7480225 = 8583^2 + 2735^2 .

It is an unprimeable number.

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, 17974 + ... + 22030.

Almost surely, 2^81148114 is an apocalyptic number.

81148114 is a deficient number, since it is larger than the sum of its proper divisors (43172774).

81148114 is a wasteful number, since it uses less digits than its factorization.

81148114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269.

The product of its digits is 1024, while the sum is 28.

The square root of 81148114 is about 9008.2247973727. The cubic root of 81148114 is about 432.9384356359.

The spelling of 81148114 in words is "eighty-one million, one hundred forty-eight thousand, one hundred fourteen".