949275581957 has 4 divisors (see below), whose sum is σ = 949363872780. Its totient is φ = 949187291136.

The previous prime is 949275581939. The next prime is 949275581963. The reversal of 949275581957 is 759185572949.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 759185572949 = 173 ⋅4388355913.

It can be written as a sum of positive squares in 2 ways, for example, as 875255673601 + 74019908356 = 935551^2 + 272066^2 .

It is a cyclic number.

It is not a de Polignac number, because 949275581957 - 2¹⁰ = 949275580933 is a prime.

It is a super-2 number, since 2×949275581957² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949275581987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44129282 + ... + 44150787.

It is an arithmetic number, because the mean of its divisors is an integer number (237340968195).

Almost surely, 2^949275581957 is an apocalyptic number.

It is an amenable number.

949275581957 is a deficient number, since it is larger than the sum of its proper divisors (88290823).

949275581957 is a wasteful number, since it uses less digits than its factorization.

949275581957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88290822.

The product of its digits is 285768000, while the sum is 71.

The spelling of 949275581957 in words is "nine hundred forty-nine billion, two hundred seventy-five million, five hundred eighty-one thousand, nine hundred fifty-seven".