1266215116 has 12 divisors (see below), whose sum is σ = 2217617920. Its totient is φ = 632610000.

The previous prime is 1266215101. The next prime is 1266215129. The reversal of 1266215116 is 6115126621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118635 + ... + 128866.

Almost surely, 2^1266215116 is an apocalyptic number.

It is an amenable number.

1266215116 is a deficient number, since it is larger than the sum of its proper divisors (951402804).

1266215116 is a wasteful number, since it uses less digits than its factorization.

1266215116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248784 (or 248782 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 1266215116 is about 35583.9165354237. The cubic root of 1266215116 is about 1081.8552690497.

The spelling of 1266215116 in words is "one billion, two hundred sixty-six million, two hundred fifteen thousand, one hundred sixteen".