8123091916 has 24 divisors (see below), whose sum is σ = 14514050880. Its totient is φ = 3976770000.

The previous prime is 8123091881. The next prime is 8123091917. The reversal of 8123091916 is 6191903218.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8123091917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9330 + ... + 127801.

It is an arithmetic number, because the mean of its divisors is an integer number (604752120).

Almost surely, 2^8123091916 is an apocalyptic number.

It is an amenable number.

8123091916 is a deficient number, since it is larger than the sum of its proper divisors (6390958964).

8123091916 is a wasteful number, since it uses less digits than its factorization.

8123091916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137445 (or 137443 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 8123091916 is about 90128.1971194365. The cubic root of 8123091916 is about 2010.2054950253.

The spelling of 8123091916 in words is "eight billion, one hundred twenty-three million, ninety-one thousand, nine hundred sixteen".