1020388161 has 32 divisors (see below), whose sum is σ = 1554069888. Its totient is φ = 589962240.

The previous prime is 1020388129. The next prime is 1020388177. The reversal of 1020388161 is 1618830201.

1020388161 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 1020388161 - 2⁵ = 1020388129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020388111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547371 + ... + 549231.

It is an arithmetic number, because the mean of its divisors is an integer number (48564684).

Almost surely, 2^1020388161 is an apocalyptic number.

It is an amenable number.

1020388161 is a deficient number, since it is larger than the sum of its proper divisors (533681727).

1020388161 is a wasteful number, since it uses less digits than its factorization.

1020388161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1020388161 is about 31943.5151634882. The cubic root of 1020388161 is about 1006.7503834568.

The spelling of 1020388161 in words is "one billion, twenty million, three hundred eighty-eight thousand, one hundred sixty-one".