940611923861 has 2 divisors, whose sum is σ = 940611923862. Its totient is φ = 940611923860.

The previous prime is 940611923857. The next prime is 940611923887. The reversal of 940611923861 is 168329116049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 893934321361 + 46677602500 = 945481^2 + 216050^2 .

It is an emirp because it is prime and its reverse (168329116049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 940611923861 - 2² = 940611923857 is a prime.

It is a super-2 number, since 2×940611923861² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940611923821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470305961930 + 470305961931.

It is an arithmetic number, because the mean of its divisors is an integer number (470305961931).

Almost surely, 2^940611923861 is an apocalyptic number.

It is an amenable number.

940611923861 is a deficient number, since it is larger than the sum of its proper divisors (1).

940611923861 is an equidigital number, since it uses as much as digits as its factorization.

940611923861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 940611923861 in words is "nine hundred forty billion, six hundred eleven million, nine hundred twenty-three thousand, eight hundred sixty-one".