863118091 has 16 divisors (see below), whose sum is σ = 960968448. Its totient is φ = 768549600.

The previous prime is 863118071. The next prime is 863118127. The reversal of 863118091 is 190811368.

It is a cyclic number.

It is not a de Polignac number, because 863118091 - 2¹³ = 863109899 is a prime.

It is a super-2 number, since 2×863118091² = 1489945678022968562, 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 863118091.

It is not an unprimeable number, because it can be changed into a prime (863118031) 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, 562996 + ... + 564526.

It is an arithmetic number, because the mean of its divisors is an integer number (60060528).

Almost surely, 2^863118091 is an apocalyptic number.

863118091 is a deficient number, since it is larger than the sum of its proper divisors (97850357).

863118091 is a wasteful number, since it uses less digits than its factorization.

863118091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 863118091 is about 29378.8715065776. The cubic root of 863118091 is about 952.1164599159.

The spelling of 863118091 in words is "eight hundred sixty-three million, one hundred eighteen thousand, ninety-one".