1331868266 has 16 divisors (see below), whose sum is σ = 2032825248. Its totient is φ = 654284400.

The previous prime is 1331868259. The next prime is 1331868271. The reversal of 1331868266 is 6628681331.

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, 112841 + ... + 124083.

It is an arithmetic number, because the mean of its divisors is an integer number (127051578).

Almost surely, 2^1331868266 is an apocalyptic number.

1331868266 is a deficient number, since it is larger than the sum of its proper divisors (700956982).

1331868266 is a wasteful number, since it uses less digits than its factorization.

1331868266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12277.

The product of its digits is 248832, while the sum is 44.

The square root of 1331868266 is about 36494.7703924823. The cubic root of 1331868266 is about 1100.2391397428.

The spelling of 1331868266 in words is "one billion, three hundred thirty-one million, eight hundred sixty-eight thousand, two hundred sixty-six".