2391885473 has 2 divisors, whose sum is σ = 2391885474. Its totient is φ = 2391885472.

The previous prime is 2391885443. The next prime is 2391885491. The reversal of 2391885473 is 3745881932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2155094929 + 236790544 = 46423^2 + 15388^2 .

It is a cyclic number.

It is not a de Polignac number, because 2391885473 - 2⁶ = 2391885409 is a prime.

It is a super-2 number, since 2×2391885473² = 11442232231896867458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2391885443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195942736 + 1195942737.

It is an arithmetic number, because the mean of its divisors is an integer number (1195942737).

Almost surely, 2^2391885473 is an apocalyptic number.

It is an amenable number.

2391885473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391885473 is an equidigital number, since it uses as much as digits as its factorization.

2391885473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 2391885473 is about 48906.9061892081. The cubic root of 2391885473 is about 1337.3552708916.

The spelling of 2391885473 in words is "two billion, three hundred ninety-one million, eight hundred eighty-five thousand, four hundred seventy-three".