8158061658 has 16 divisors (see below), whose sum is σ = 16324729056. Its totient is φ = 2717919600.

The previous prime is 8158061657. The next prime is 8158061663. The reversal of 8158061658 is 8561608518.

It is not an unprimeable number, because it can be changed into a prime (8158061651) 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, 346216 + ... + 369027.

It is an arithmetic number, because the mean of its divisors is an integer number (1020295566).

Almost surely, 2^8158061658 is an apocalyptic number.

8158061658 is an abundant number, since it is smaller than the sum of its proper divisors (8166667398).

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

8158061658 is a wasteful number, since it uses less digits than its factorization.

8158061658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717149.

The product of its (nonzero) digits is 460800, while the sum is 48.

The square root of 8158061658 is about 90321.9887845701. The cubic root of 8158061658 is about 2013.0859964411.

The spelling of 8158061658 in words is "eight billion, one hundred fifty-eight million, sixty-one thousand, six hundred fifty-eight".