1921350266 has 16 divisors (see below), whose sum is σ = 3149573760. Its totient is φ = 871800480.

The previous prime is 1921350257. The next prime is 1921350269. The reversal of 1921350266 is 6620531291.

It is not an unprimeable number, because it can be changed into a prime (1921350269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64226 + ... + 89261.

It is an arithmetic number, because the mean of its divisors is an integer number (196848360).

Almost surely, 2^1921350266 is an apocalyptic number.

1921350266 is a deficient number, since it is larger than the sum of its proper divisors (1228223494).

1921350266 is a wasteful number, since it uses less digits than its factorization.

1921350266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154069.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1921350266 is about 43833.2096246670. The cubic root of 1921350266 is about 1243.1842945521.

The spelling of 1921350266 in words is "one billion, nine hundred twenty-one million, three hundred fifty thousand, two hundred sixty-six".