836163649 has 8 divisors (see below), whose sum is σ = 886996008. Its totient is φ = 785514240.

The previous prime is 836163637. The next prime is 836163667. The reversal of 836163649 is 946361638.

It can be written as a sum of positive squares in 4 ways, for example, as 260499600 + 575664049 = 16140^2 + 23993^2 .

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

It is not a de Polignac number, because 836163649 - 2⁵ = 836163617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 836163599 and 836163608.

It is not an unprimeable number, because it can be changed into a prime (836161649) 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, 36262 + ... + 54655.

It is an arithmetic number, because the mean of its divisors is an integer number (110874501).

Almost surely, 2^836163649 is an apocalyptic number.

It is an amenable number.

836163649 is a deficient number, since it is larger than the sum of its proper divisors (50832359).

836163649 is a wasteful number, since it uses less digits than its factorization.

836163649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91475.

The product of its digits is 559872, while the sum is 46.

The square root of 836163649 is about 28916.4944106301. The cubic root of 836163649 is about 942.1001966227.

It can be divided in two parts, 8361 and 63649, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 836163649 in words is "eight hundred thirty-six million, one hundred sixty-three thousand, six hundred forty-nine".