1261050786 has 48 divisors (see below), whose sum is σ = 3045276000. Its totient is φ = 374799744.

The previous prime is 1261050779. The next prime is 1261050793. The reversal of 1261050786 is 6870501621.

1261050786 is a `hidden beast` number, since 12 + 61 + 0 + 507 + 86 = 666.

It is an interprime number because it is at equal distance from previous prime (1261050779) and next prime (1261050793).

It is a self number, because there is not a number n which added to its sum of digits gives 1261050786.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102636 + ... + 114263.

It is an arithmetic number, because the mean of its divisors is an integer number (63443250).

Almost surely, 2^1261050786 is an apocalyptic number.

1261050786 is an abundant number, since it is smaller than the sum of its proper divisors (1784225214).

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

1261050786 is a wasteful number, since it uses less digits than its factorization.

1261050786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216943 (or 216940 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1261050786 is about 35511.2768849559. The cubic root of 1261050786 is about 1080.3824622786.

The spelling of 1261050786 in words is "one billion, two hundred sixty-one million, fifty thousand, seven hundred eighty-six".