2389831261 has 8 divisors (see below), whose sum is σ = 2574180864. Its totient is φ = 2212185360.

The previous prime is 2389831243. The next prime is 2389831271. The reversal of 2389831261 is 1621389832.

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 2389831261 - 2⁹ = 2389830749 is a prime.

It is a super-2 number, since 2×2389831261² = 11422586912105700242, which 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 (2389831271) 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, 1675186 + ... + 1676611.

It is an arithmetic number, because the mean of its divisors is an integer number (321772608).

Almost surely, 2^2389831261 is an apocalyptic number.

It is an amenable number.

2389831261 is a deficient number, since it is larger than the sum of its proper divisors (184349603).

2389831261 is a wasteful number, since it uses less digits than its factorization.

2389831261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351851.

The product of its digits is 124416, while the sum is 43.

The square root of 2389831261 is about 48885.9004315150. The cubic root of 2389831261 is about 1336.9723096795.

The spelling of 2389831261 in words is "two billion, three hundred eighty-nine million, eight hundred thirty-one thousand, two hundred sixty-one".