1288880166 has 32 divisors (see below), whose sum is σ = 2947242240. Its totient is φ = 368097696.

The previous prime is 1288880083. The next prime is 1288880167. The reversal of 1288880166 is 6610888821.

It is a super-2 number, since 2×1288880166² = 3322424164616375112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288880167) 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, 129040 + ... + 138668.

It is an arithmetic number, because the mean of its divisors is an integer number (92101320).

Almost surely, 2^1288880166 is an apocalyptic number.

1288880166 is an abundant number, since it is smaller than the sum of its proper divisors (1658362074).

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

1288880166 is a wasteful number, since it uses less digits than its factorization.

1288880166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12828.

The product of its (nonzero) digits is 294912, while the sum is 48.

The square root of 1288880166 is about 35900.9772290393. The cubic root of 1288880166 is about 1088.2721456209.

The spelling of 1288880166 in words is "one billion, two hundred eighty-eight million, eight hundred eighty thousand, one hundred sixty-six".