8131989026 has 16 divisors (see below), whose sum is σ = 13955203584. Its totient is φ = 3481475424.

The previous prime is 8131989017. The next prime is 8131989031. The reversal of 8131989026 is 6209891318.

It is a super-2 number, since 2×8131989026² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 291410 + ... + 318093.

It is an arithmetic number, because the mean of its divisors is an integer number (872200224).

Almost surely, 2^8131989026 is an apocalyptic number.

8131989026 is a deficient number, since it is larger than the sum of its proper divisors (5823214558).

8131989026 is a wasteful number, since it uses less digits than its factorization.

8131989026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610465.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 8131989026 is about 90177.5416941491. The cubic root of 8131989026 is about 2010.9391439786.

The spelling of 8131989026 in words is "eight billion, one hundred thirty-one million, nine hundred eighty-nine thousand, twenty-six".