949665261 has 8 divisors (see below), whose sum is σ = 1267265664. Its totient is φ = 632587520.

The previous prime is 949665251. The next prime is 949665281. The reversal of 949665261 is 162566949.

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

It is a cyclic number.

It is not a de Polignac number, because 949665261 - 2¹⁷ = 949534189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 949665261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949665251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126405 + ... + 133706.

It is an arithmetic number, because the mean of its divisors is an integer number (158408208).

Almost surely, 2^949665261 is an apocalyptic number.

It is an amenable number.

949665261 is a deficient number, since it is larger than the sum of its proper divisors (317600403).

949665261 is a wasteful number, since it uses less digits than its factorization.

949665261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261331.

The product of its digits is 699840, while the sum is 48.

The square root of 949665261 is about 30816.6393527912. The cubic root of 949665261 is about 982.9320977483.

The spelling of 949665261 in words is "nine hundred forty-nine million, six hundred sixty-five thousand, two hundred sixty-one".