1266016633 has 16 divisors (see below), whose sum is σ = 1467712000. Its totient is φ = 1069578432.

The previous prime is 1266016613. The next prime is 1266016637. The reversal of 1266016633 is 3366106621.

It is a cyclic number.

It is not a de Polignac number, because 1266016633 - 2¹³ = 1266008441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266016637) 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, 390463 + ... + 393691.

It is an arithmetic number, because the mean of its divisors is an integer number (91732000).

Almost surely, 2^1266016633 is an apocalyptic number.

It is an amenable number.

1266016633 is a deficient number, since it is larger than the sum of its proper divisors (201695367).

1266016633 is an equidigital number, since it uses as much as digits as its factorization.

1266016633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 1266016633 is about 35581.1274835410. The cubic root of 1266016633 is about 1081.7987380813.

The spelling of 1266016633 in words is "one billion, two hundred sixty-six million, sixteen thousand, six hundred thirty-three".