1266643032 has 16 divisors (see below), whose sum is σ = 3166607640. Its totient is φ = 422214336.

The previous prime is 1266643013. The next prime is 1266643067. The reversal of 1266643032 is 2303466621.

It is a junction number, because it is equal to n+sod(n) for n = 1266642984 and 1266643002.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26388373 + ... + 26388420.

Almost surely, 2^1266643032 is an apocalyptic number.

1266643032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1266643032 is an abundant number, since it is smaller than the sum of its proper divisors (1899964608).

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

1266643032 is a wasteful number, since it uses less digits than its factorization.

1266643032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52776802 (or 52776798 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 1266643032 is about 35589.9288001536. The cubic root of 1266643032 is about 1081.9771259214.

The spelling of 1266643032 in words is "one billion, two hundred sixty-six million, six hundred forty-three thousand, thirty-two".