8190406905 has 16 divisors (see below), whose sum is σ = 13105800000. Its totient is φ = 4367834048.

The previous prime is 8190406879. The next prime is 8190406907. The reversal of 8190406905 is 5096040918.

It is a cyclic number.

It is not a de Polignac number, because 8190406905 - 2¹² = 8190402809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8190406907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266674 + ... + 295796.

It is an arithmetic number, because the mean of its divisors is an integer number (819112500).

Almost surely, 2^8190406905 is an apocalyptic number.

It is an amenable number.

8190406905 is a deficient number, since it is larger than the sum of its proper divisors (4915393095).

8190406905 is a wasteful number, since it uses less digits than its factorization.

8190406905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47880.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 8190406905 is about 90500.8668743013. The cubic root of 8190406905 is about 2015.7429959743.

The spelling of 8190406905 in words is "eight billion, one hundred ninety million, four hundred six thousand, nine hundred five".