1051216166 has 80 divisors (see below), whose sum is σ = 2138641920. Its totient is φ = 376477920.

The previous prime is 1051216163. The next prime is 1051216171. The reversal of 1051216166 is 6616121501.

It is a super-2 number, since 2×1051216166² = 2210110855319479112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051216163) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4398275 + ... + 4398513.

It is an arithmetic number, because the mean of its divisors is an integer number (26733024).

Almost surely, 2^1051216166 is an apocalyptic number.

1051216166 is an abundant number, since it is smaller than the sum of its proper divisors (1087425754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051216166 is an equidigital number, since it uses as much as digits as its factorization.

1051216166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1051216166 is about 32422.4639100732. The cubic root of 1051216166 is about 1016.7886202298.

Adding to 1051216166 its reverse (6616121501), we get a palindrome (7667337667).

The spelling of 1051216166 in words is "one billion, fifty-one million, two hundred sixteen thousand, one hundred sixty-six".