861126369 has 8 divisors (see below), whose sum is σ = 1148905632. Its totient is φ = 573715680.

The previous prime is 861126367. The next prime is 861126373. The reversal of 861126369 is 963621168.

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

It is not a de Polignac number, because 861126369 - 2¹ = 861126367 is a prime.

It is a super-2 number, since 2×861126369² = 1483077246774248322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 861126369.

It is not an unprimeable number, because it can be changed into a prime (861126367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86644 + ... + 96069.

It is an arithmetic number, because the mean of its divisors is an integer number (143613204).

Almost surely, 2^861126369 is an apocalyptic number.

It is an amenable number.

861126369 is a deficient number, since it is larger than the sum of its proper divisors (287779263).

861126369 is a wasteful number, since it uses less digits than its factorization.

861126369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184287.

The product of its digits is 93312, while the sum is 42.

The square root of 861126369 is about 29344.9547452369. The cubic root of 861126369 is about 951.3835313015.

It can be divided in two parts, 8611 and 26369, that added together give a triangular number (34980 = T₂₆₄).

The spelling of 861126369 in words is "eight hundred sixty-one million, one hundred twenty-six thousand, three hundred sixty-nine".