28019142941 has 2 divisors, whose sum is σ = 28019142942. Its totient is φ = 28019142940.

The previous prime is 28019142937. The next prime is 28019142967. The reversal of 28019142941 is 14924191082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28011043225 + 8099716 = 167365^2 + 2846^2 .

It is a cyclic number.

It is not a de Polignac number, because 28019142941 - 2² = 28019142937 is a prime.

It is a super-2 number, since 2×28019142941² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28019112941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14009571470 + 14009571471.

It is an arithmetic number, because the mean of its divisors is an integer number (14009571471).

Almost surely, 2^28019142941 is an apocalyptic number.

It is an amenable number.

28019142941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28019142941 is an equidigital number, since it uses as much as digits as its factorization.

28019142941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 28019142941 in words is "twenty-eight billion, nineteen million, one hundred forty-two thousand, nine hundred forty-one".