1201166979 has 16 divisors (see below), whose sum is σ = 1658092800. Its totient is φ = 772553376.

The previous prime is 1201166969. The next prime is 1201166999. The reversal of 1201166979 is 9796611021.

It is not a de Polignac number, because 1201166979 - 2⁷ = 1201166851 is a prime.

It is a super-2 number, since 2×1201166979² = 2885604222879972882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201166979.

It is not an unprimeable number, because it can be changed into a prime (1201166929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122202 + ... + 131664.

It is an arithmetic number, because the mean of its divisors is an integer number (103630800).

Almost surely, 2^1201166979 is an apocalyptic number.

1201166979 is a deficient number, since it is larger than the sum of its proper divisors (456925821).

1201166979 is a wasteful number, since it uses less digits than its factorization.

1201166979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10954.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 1201166979 is about 34657.8559492650. The cubic root of 1201166979 is about 1063.0029298658.

The spelling of 1201166979 in words is "one billion, two hundred one million, one hundred sixty-six thousand, nine hundred seventy-nine".