818888145 has 16 divisors (see below), whose sum is σ = 1310868672. Its totient is φ = 436524480.

The previous prime is 818888131. The next prime is 818888197. The reversal of 818888145 is 541888818.

It is not a de Polignac number, because 818888145 - 2⁴ = 818888129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20655 + ... + 45435.

It is an arithmetic number, because the mean of its divisors is an integer number (81929292).

Almost surely, 2^818888145 is an apocalyptic number.

It is an amenable number.

818888145 is a deficient number, since it is larger than the sum of its proper divisors (491980527).

818888145 is a wasteful number, since it uses less digits than its factorization.

818888145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26992.

The product of its digits is 655360, while the sum is 51.

The square root of 818888145 is about 28616.2217107710. The cubic root of 818888145 is about 935.5669281439.

The spelling of 818888145 in words is "eight hundred eighteen million, eight hundred eighty-eight thousand, one hundred forty-five".