1320998266 has 16 divisors (see below), whose sum is σ = 2269491840. Its totient is φ = 564911280.

The previous prime is 1320998221. The next prime is 1320998269. The reversal of 1320998266 is 6628990231.

It is not an unprimeable number, because it can be changed into a prime (1320998269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95886 + ... + 108793.

It is an arithmetic number, because the mean of its divisors is an integer number (141843240).

Almost surely, 2^1320998266 is an apocalyptic number.

1320998266 is a deficient number, since it is larger than the sum of its proper divisors (948493574).

1320998266 is a wasteful number, since it uses less digits than its factorization.

1320998266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205149.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1320998266 is about 36345.5398364091. The cubic root of 1320998266 is about 1097.2377709019.

The spelling of 1320998266 in words is "one billion, three hundred twenty million, nine hundred ninety-eight thousand, two hundred sixty-six".