1266009630 has 32 divisors (see below), whose sum is σ = 3039367968. Its totient is φ = 337497600.

The previous prime is 1266009629. The next prime is 1266009659. The reversal of 1266009630 is 369006621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1266009591 and 1266009600.

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 15 ways as a sum of consecutive naturals, for example, 165490 + ... + 172970.

It is an arithmetic number, because the mean of its divisors is an integer number (94980249).

Almost surely, 2^1266009630 is an apocalyptic number.

1266009630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266009630 is an abundant number, since it is smaller than the sum of its proper divisors (1773358338).

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

1266009630 is a wasteful number, since it uses less digits than its factorization.

1266009630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1266009630 is about 35581.0290744942. The cubic root of 1266009630 is about 1081.7967434128.

The spelling of 1266009630 in words is "one billion, two hundred sixty-six million, nine thousand, six hundred thirty".