19901027941 has 2 divisors, whose sum is σ = 19901027942. Its totient is φ = 19901027940.

The previous prime is 19901027897. The next prime is 19901027953. The reversal of 19901027941 is 14972010991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19901027041 + 900 = 141071^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 19901027941 - 2⁷ = 19901027813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19901025941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9950513970 + 9950513971.

It is an arithmetic number, because the mean of its divisors is an integer number (9950513971).

Almost surely, 2^19901027941 is an apocalyptic number.

It is an amenable number.

19901027941 is a deficient number, since it is larger than the sum of its proper divisors (1).

19901027941 is an equidigital number, since it uses as much as digits as its factorization.

19901027941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 19901027941 in words is "nineteen billion, nine hundred one million, twenty-seven thousand, nine hundred forty-one".