1266150860 has 48 divisors (see below), whose sum is σ = 2924401536. Its totient is φ = 457550592.

The previous prime is 1266150859. The next prime is 1266150863. The reversal of 1266150860 is 680516621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266150860.

It is not an unprimeable number, because it can be changed into a prime (1266150863) 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, 39587 + ... + 64026.

It is an arithmetic number, because the mean of its divisors is an integer number (60925032).

Almost surely, 2^1266150860 is an apocalyptic number.

1266150860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266150860 is an abundant number, since it is smaller than the sum of its proper divisors (1658250676).

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

1266150860 is a wasteful number, since it uses less digits than its factorization.

1266150860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103682 (or 103680 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1266150860 is about 35583.0136441533. The cubic root of 1266150860 is about 1081.8369686132.

The spelling of 1266150860 in words is "one billion, two hundred sixty-six million, one hundred fifty thousand, eight hundred sixty".