865795149 has 12 divisors (see below), whose sum is σ = 1296911616. Its totient is φ = 577196604.

The previous prime is 865795123. The next prime is 865795157. The reversal of 865795149 is 941597568.

It is not a de Polignac number, because 865795149 - 2⁸ = 865794893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 865795095 and 865795104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865795349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1781229 + ... + 1781714.

It is an arithmetic number, because the mean of its divisors is an integer number (108075968).

Almost surely, 2^865795149 is an apocalyptic number.

It is an amenable number.

865795149 is a deficient number, since it is larger than the sum of its proper divisors (431116467).

865795149 is an equidigital number, since it uses as much as digits as its factorization.

865795149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562958 (or 3562946 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 865795149 is about 29424.3971730943. The cubic root of 865795149 is about 953.0998094484.

The spelling of 865795149 in words is "eight hundred sixty-five million, seven hundred ninety-five thousand, one hundred forty-nine".