1266040363 has 16 divisors (see below), whose sum is σ = 1480504320. Its totient is φ = 1060065216.

The previous prime is 1266040351. The next prime is 1266040393. The reversal of 1266040363 is 3630406621.

It is not a de Polignac number, because 1266040363 - 2⁵ = 1266040331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266040343) 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, 183820 + ... + 190582.

It is an arithmetic number, because the mean of its divisors is an integer number (92531520).

Almost surely, 2^1266040363 is an apocalyptic number.

1266040363 is a deficient number, since it is larger than the sum of its proper divisors (214463957).

1266040363 is an equidigital number, since it uses as much as digits as its factorization.

1266040363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7386.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 1266040363 is about 35581.4609452732. The cubic root of 1266040363 is about 1081.8054970561.

Adding to 1266040363 its reverse (3630406621), we get a palindrome (4896446984).

The spelling of 1266040363 in words is "one billion, two hundred sixty-six million, forty thousand, three hundred sixty-three".