81014810 has 8 divisors (see below), whose sum is σ = 145826676. Its totient is φ = 32405920.

The previous prime is 81014797. The next prime is 81014819. The reversal of 81014810 is 1841018.

It can be written as a sum of positive squares in 2 ways, for example, as 75811849 + 5202961 = 8707^2 + 2281^2 .

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

It is a super-2 number, since 2×81014810² = 13126798878672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81014819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4050731 + ... + 4050750.

Almost surely, 2^81014810 is an apocalyptic number.

81014810 is a deficient number, since it is larger than the sum of its proper divisors (64811866).

81014810 is a wasteful number, since it uses less digits than its factorization.

81014810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8101488.

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

The square root of 81014810 is about 9000.8227401721. The cubic root of 81014810 is about 432.7012395051.

Adding to 81014810 its reverse (1841018), we get a palindrome (82855828).

The spelling of 81014810 in words is "eighty-one million, fourteen thousand, eight hundred ten".