1018311905 has 16 divisors (see below), whose sum is σ = 1318693824. Its totient is φ = 750429120.

The previous prime is 1018311893. The next prime is 1018311911. The reversal of 1018311905 is 5091138101.

1018311905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1018311905 - 2⁸ = 1018311649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15962 + ... + 47868.

It is an arithmetic number, because the mean of its divisors is an integer number (82418364).

Almost surely, 2^1018311905 is an apocalyptic number.

It is an amenable number.

1018311905 is a deficient number, since it is larger than the sum of its proper divisors (300381919).

1018311905 is a wasteful number, since it uses less digits than its factorization.

1018311905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32416.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 1018311905 is about 31910.9997493027. Note that the first 3 decimals coincide. The cubic root of 1018311905 is about 1006.0670843783.

The spelling of 1018311905 in words is "one billion, eighteen million, three hundred eleven thousand, nine hundred five".