1979955206 has 16 divisors (see below), whose sum is σ = 3014719344. Its totient is φ = 975120384.

The previous prime is 1979955181. The next prime is 1979955221. The reversal of 1979955206 is 6025599791.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38246 + ... + 73638.

It is an arithmetic number, because the mean of its divisors is an integer number (188419959).

Almost surely, 2^1979955206 is an apocalyptic number.

1979955206 is a deficient number, since it is larger than the sum of its proper divisors (1034764138).

1979955206 is a wasteful number, since it uses less digits than its factorization.

1979955206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35815.

The product of its (nonzero) digits is 1530900, while the sum is 53.

The square root of 1979955206 is about 44496.6875845832. The cubic root of 1979955206 is about 1255.6977661870.

The spelling of 1979955206 in words is "one billion, nine hundred seventy-nine million, nine hundred fifty-five thousand, two hundred six".