1266263850 has 48 divisors (see below), whose sum is σ = 3276879552. Its totient is φ = 322988160.

The previous prime is 1266263833. The next prime is 1266263857. The reversal of 1266263850 is 583626621.

It is a junction number, because it is equal to n+sod(n) for n = 1266263799 and 1266263808.

It is not an unprimeable number, because it can be changed into a prime (1266263857) 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 23 ways as a sum of consecutive naturals, for example, 180067 + ... + 186966.

It is an arithmetic number, because the mean of its divisors is an integer number (68268324).

Almost surely, 2^1266263850 is an apocalyptic number.

1266263850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266263850 is an abundant number, since it is smaller than the sum of its proper divisors (2010615702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266263850 is a wasteful number, since it uses less digits than its factorization.

1266263850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367071 (or 367066 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1266263850 is about 35584.6013044969. The cubic root of 1266263850 is about 1081.8691483286.

The spelling of 1266263850 in words is "one billion, two hundred sixty-six million, two hundred sixty-three thousand, eight hundred fifty".