8631011389 has 32 divisors (see below), whose sum is σ = 11596677120. Its totient is φ = 6203736000.

The previous prime is 8631011377. The next prime is 8631011437. The reversal of 8631011389 is 9831101368.

It is not a de Polignac number, because 8631011389 - 2¹¹ = 8631009341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631011339) 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, 2239314 + ... + 2243164.

It is an arithmetic number, because the mean of its divisors is an integer number (362396160).

Almost surely, 2^8631011389 is an apocalyptic number.

It is an amenable number.

8631011389 is a deficient number, since it is larger than the sum of its proper divisors (2965665731).

8631011389 is a wasteful number, since it uses less digits than its factorization.

8631011389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 8631011389 is about 92903.2366981904. The cubic root of 8631011389 is about 2051.2593007414.

The spelling of 8631011389 in words is "eight billion, six hundred thirty-one million, eleven thousand, three hundred eighty-nine".