2261406166 has 16 divisors (see below), whose sum is σ = 3521111040. Its totient is φ = 1088110440.

The previous prime is 2261406157. The next prime is 2261406241. The reversal of 2261406166 is 6616041622.

It is a super-2 number, since 2×2261406166² = 10227915695245639112, which contains 22 as substring.

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, 90786 + ... + 112981.

It is an arithmetic number, because the mean of its divisors is an integer number (220069440).

Almost surely, 2^2261406166 is an apocalyptic number.

2261406166 is a deficient number, since it is larger than the sum of its proper divisors (1259704874).

2261406166 is a wasteful number, since it uses less digits than its factorization.

2261406166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203979.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2261406166 is about 47554.2444583026. The cubic root of 2261406166 is about 1312.5812334423.

Adding to 2261406166 its reverse (6616041622), we get a palindrome (8877447788).

The spelling of 2261406166 in words is "two billion, two hundred sixty-one million, four hundred six thousand, one hundred sixty-six".