1261101286 has 8 divisors (see below), whose sum is σ = 1891816344. Its totient is φ = 630495840.

The previous prime is 1261101217. The next prime is 1261101287. The reversal of 1261101286 is 6821011621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261101287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13681 + ... + 52051.

It is an arithmetic number, because the mean of its divisors is an integer number (236477043).

Almost surely, 2^1261101286 is an apocalyptic number.

1261101286 is a deficient number, since it is larger than the sum of its proper divisors (630715058).

1261101286 is a wasteful number, since it uses less digits than its factorization.

1261101286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54806.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1261101286 is about 35511.9879195744. The cubic root of 1261101286 is about 1080.3968837401.

The spelling of 1261101286 in words is "one billion, two hundred sixty-one million, one hundred one thousand, two hundred eighty-six".