81088018 has 16 divisors (see below), whose sum is σ = 138459456. Its totient is φ = 35255440.

The previous prime is 81088003. The next prime is 81088027.

81088018 is nontrivially palindromic in base 10.

81088018 is a strobogrammatic number because it is the same when read upside-down.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79621 + ... + 80632.

It is an arithmetic number, because the mean of its divisors is an integer number (8653716).

Almost surely, 2^81088018 is an apocalyptic number.

81088018 is a deficient number, since it is larger than the sum of its proper divisors (57371438).

81088018 is a wasteful number, since it uses less digits than its factorization.

81088018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160289.

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 81088018 is about 9004.8885612205. Note that the first 3 decimals coincide. The cubic root of 81088018 is about 432.8315352522.

The spelling of 81088018 in words is "eighty-one million, eighty-eight thousand, eighteen".