1984072273901 has 2 divisors, whose sum is σ = 1984072273902. Its totient is φ = 1984072273900.

The previous prime is 1984072273819. The next prime is 1984072273973. The reversal of 1984072273901 is 1093722704891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1911234360676 + 72837913225 = 1382474^2 + 269885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1984072273901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984072273991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992036136950 + 992036136951.

It is an arithmetic number, because the mean of its divisors is an integer number (992036136951).

Almost surely, 2^{1984072273901} is an apocalyptic number.

It is an amenable number.

1984072273901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984072273901 is an equidigital number, since it uses as much as digits as its factorization.

1984072273901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 1984072273901 in words is "one trillion, nine hundred eighty-four billion, seventy-two million, two hundred seventy-three thousand, nine hundred one".