945991183853 has 2 divisors, whose sum is σ = 945991183854. Its totient is φ = 945991183852.

The previous prime is 945991183847. The next prime is 945991183877. The reversal of 945991183853 is 358381199549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939305995684 + 6685188169 = 969178^2 + 81763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945991183853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945991183853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945991183843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472995591926 + 472995591927.

It is an arithmetic number, because the mean of its divisors is an integer number (472995591927).

Almost surely, 2^945991183853 is an apocalyptic number.

It is an amenable number.

945991183853 is a deficient number, since it is larger than the sum of its proper divisors (1).

945991183853 is an equidigital number, since it uses as much as digits as its factorization.

945991183853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41990400, while the sum is 65.

The spelling of 945991183853 in words is "nine hundred forty-five billion, nine hundred ninety-one million, one hundred eighty-three thousand, eight hundred fifty-three".