1647157106 has 16 divisors (see below), whose sum is σ = 2825694720. Its totient is φ = 705425280.

The previous prime is 1647157091. The next prime is 1647157123. The reversal of 1647157106 is 6017517461.

It is a self number, because there is not a number n which added to its sum of digits gives 1647157106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20735 + ... + 61026.

It is an arithmetic number, because the mean of its divisors is an integer number (176605920).

Almost surely, 2^1647157106 is an apocalyptic number.

1647157106 is a deficient number, since it is larger than the sum of its proper divisors (1178537614).

1647157106 is a wasteful number, since it uses less digits than its factorization.

1647157106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83209.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 1647157106 is about 40585.1833308660. The cubic root of 1647157106 is about 1180.9867036655.

The spelling of 1647157106 in words is "one billion, six hundred forty-seven million, one hundred fifty-seven thousand, one hundred six".