1260558166 has 16 divisors (see below), whose sum is σ = 2180083104. Its totient is φ = 535457664.

The previous prime is 1260558157. The next prime is 1260558179. The reversal of 1260558166 is 6618550621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396825 + ... + 399988.

It is an arithmetic number, because the mean of its divisors is an integer number (136255194).

Almost surely, 2^1260558166 is an apocalyptic number.

1260558166 is a deficient number, since it is larger than the sum of its proper divisors (919524938).

1260558166 is a wasteful number, since it uses less digits than its factorization.

1260558166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796935.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 1260558166 is about 35504.3401008947. The cubic root of 1260558166 is about 1080.2417628630.

The spelling of 1260558166 in words is "one billion, two hundred sixty million, five hundred fifty-eight thousand, one hundred sixty-six".