8139234156 has 12 divisors (see below), whose sum is σ = 18991546392. Its totient is φ = 2713078048.

The previous prime is 8139234121. The next prime is 8139234161. The reversal of 8139234156 is 6514329318.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339134745 + ... + 339134768.

It is an arithmetic number, because the mean of its divisors is an integer number (1582628866).

Almost surely, 2^8139234156 is an apocalyptic number.

It is an amenable number.

8139234156 is an abundant number, since it is smaller than the sum of its proper divisors (10852312236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8139234156 is a wasteful number, since it uses less digits than its factorization.

8139234156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678269520 (or 678269518 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 8139234156 is about 90217.7042270529. The cubic root of 8139234156 is about 2011.5361767074.

The spelling of 8139234156 in words is "eight billion, one hundred thirty-nine million, two hundred thirty-four thousand, one hundred fifty-six".