9278852261 has 4 divisors (see below), whose sum is σ = 10604402592. Its totient is φ = 7953301932.

The previous prime is 9278852249. The next prime is 9278852347. The reversal of 9278852261 is 1622588729.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1622588729 = 1723 ⋅941723.

It is a cyclic number.

It is not a de Polignac number, because 9278852261 - 2¹⁰ = 9278851237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9278851261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662775155 + ... + 662775168.

It is an arithmetic number, because the mean of its divisors is an integer number (2651100648).

Almost surely, 2^9278852261 is an apocalyptic number.

It is an amenable number.

9278852261 is a deficient number, since it is larger than the sum of its proper divisors (1325550331).

9278852261 is a wasteful number, since it uses less digits than its factorization.

9278852261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325550330.

The product of its digits is 967680, while the sum is 50.

The square root of 9278852261 is about 96326.7992876333. The cubic root of 9278852261 is about 2101.3485111194.

The spelling of 9278852261 in words is "nine billion, two hundred seventy-eight million, eight hundred fifty-two thousand, two hundred sixty-one".